Difference between revisions of "Time Travel"
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− | [[File:Frontierlandpromostill.jpg| | + | [[File:Frontierlandpromostill.jpg|400px|right|thumb|Dressed for the Old West in [[6.18 Frontierland]].]] |
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− | Time | + | ==History== |
− | + | Time travel is a method used to take a person or entity forward or backward in time. The rule of time travel is that the timeline is fixed, traveling to the past will not alter events that have already happened. However after the [[Apocalypse]] was averted, these rules were changed, allowing for the past to be altered as when [[Balthazar]] [[6.17 My Heart Will Go On|prevented the ''Titanic'' from sinking]], which had ramifications throughout the subsequent years. | |
− | + | In certain cases, it was shown that any changes made to the past may take some time to catch up in the present, such as when [[John Winchester]] was plucked from 2003 to 2019 and time slowly began adjusting, until John was sent back, reverting the world back to the original timeline. | |
− | | | + | |
− | + | Time travel can be associated with [[alternate universes]], time loops and [[reality warping]]. | |
+ | |||
+ | ===Characters=== | ||
+ | Characters and beings that have shown the ability (whether natural or through magic) to manipulate or bend time include: | ||
+ | |||
+ | * [[Angel Lore|Angels]] | ||
+ | ** [[Anna Milton]] | ||
+ | ** [[Balthazar]] | ||
+ | ** [[Castiel]] | ||
+ | * [[Archangels]] | ||
+ | ** [[Gabriel]] | ||
+ | ** [[Lucifer]] | ||
+ | ** [[Michael]] | ||
+ | * [[Gods]] | ||
+ | ** [[Atropos]] | ||
+ | ** [[Chronos]] | ||
+ | ** [[Chuck]] / God | ||
+ | * Humans | ||
+ | ** [[Henry Winchester]] | ||
+ | ** [[Sam Winchester]] | ||
+ | * [[Reapers]] | ||
+ | ** [[Death]] | ||
+ | ** [[Billie]] | ||
+ | ** [[The Reaper]] | ||
+ | ** [[Tessa]] | ||
+ | |||
+ | ==Episodes== | ||
+ | ===[[4.03 In the Beginning]]=== | ||
+ | [[Castiel]] sends [[Dean]] back to Lawrence in 1973. Dean tries, and fails, to kill [[Azazel]]. Castiel tells him the purpose of the trip was for Dean to learn how the involvement of the Winchester family with [[Azazel]] began, and hopefully help Dean, and [[Heaven]], work out what his ultimate endgame was – and [[Sam]]'s role in it. | ||
− | + | ===[[5.04 The End]]=== | |
+ | [[Zachariah]] created a future where Sam and Dean were no longer hunting together and haven't been for five years. It's the year 2014 and most of the population are either dead or have become [[zombies]] due to the [[Croatoan virus]]. Originally conceived a time travel piece, the episode ended up presenting the 2014 future as an [[alternate universe]] constructed by Zachariah. | ||
− | + | ===[[5.13 The Song Remains the Same]]=== | |
+ | On Heaven's instruction, [[Anna]] goes back to 1978 to kill [[John]] and [[Mary Winchester]], in order to stop Sam from ever being born. Castiel takes Sam and Dean back to stop her, and is severely weakened by the effort. [[Michael]] ends up intervening to save John and Mary, erasing their memories of the events. | ||
− | + | ===[[6.17 My Heart Will Go On]]=== | |
+ | This episode involves both time travel and an [[alternate universe]]. | ||
− | + | [[Castiel]] orders [[Balthazar]] to stop the sinking of the Titanic so that there would be 50,000 [[souls]] in existence that otherwise wouldn't be (the descendants of passengers) in order to use the souls to gain power in his fight against [[Raphael]]. The act causes a cascade of changes through history: | |
+ | * [[Dean]] drives a Mustang which has the original plates the [[Impala]] had – KAZ 2Y5. | ||
+ | * The Impala line of cars was not produced. | ||
+ | * [[Ellen]] and [[Jo]] are alive. | ||
+ | * Ellen and [[Bobby]] are married and [[Singer Salvage Yard]] is called B & E Scrap Yard. Bobby's house appears neater than usual. | ||
+ | * Jo leads a team of hunters. | ||
+ | * In [[2.17 Heart]] we learned that Sam knew Dean always played 'scissors' when they did rock, paper, scissors, so Sam always won. Here Sam loses, although Dean still throws scissors. | ||
+ | * In the travel agency we see Cuba is a resort island destination – "America's Favorite Holiday Destination" – and Detroit was voted "America's Top City." | ||
+ | * Celine Dion is a "destitute lounge singer somewhere in Quebec." | ||
+ | * Cas transports Sam and Dean to "White Russia." This is an old term for Belarus and may be a hint that the Russian revolution of 1917 that lead to the formation of the Soviet Union, didn't occur. | ||
+ | * Obviously the movie the Titanic was never made! | ||
− | + | Eventually, in order to save Sam and Dean, Balthazar is forced to return to the past and unsink the Titanic, changing everything back though Castiel makes sure Sam and Dean remember what happened. | |
− | + | ===[[6.18 Frontierland]]=== | |
+ | Dean and Sam get Castiel to send them back to 1861 after reading that [[Samuel Colt]] shot a [[phoenix]], the ashes of which they believe will kill [[Eve]]. Meanwhile Castiel is weakened after being attacked by [[Rachel]] and must draw on power from [[Bobby]]'s soul to bring them back. When Sam and Dean are pulled back to the present day without the ashes, they think the cause is lost, but then a courier arrives. He delivers a package to Sam sent 150 years ago by Samuel Colt. It contains Sam's phone – and a bottle containing the ashes of the phoenix. | ||
+ | ===[[6.20 The Man Who Would Be King]]=== | ||
+ | Raphael sends Castiel a week back in time. | ||
− | + | ===[[7.12 Time After Time]]=== | |
− | + | [[Chronos]], the God of Time, can travel through time by taking energy from three humans. [[Dean]] charges him as he is attacking a man and is pulled back in time with him to 1944. Chronos evades Dean, but his killings in this year have attracted the notice of hunter [[Eliot Ness]], who teams up with Dean. | |
− | |||
− | + | In the present, [[Sam]] and [[Jody Mills]] find a [[spell]] to summon Chronos to their time and location. When the now elderly [[Lila Taylor]] reveals that she witnessed Chronos throttling Dean in 1944, and that the clocks stopped at 11:34 that night, Sam and Jody are able to summon Chronos while he is attacking Dean, bringing both of them to the present. Sam stabs Chronos with the stake that came with them. Chronos, dying, tells Sam that his future is full of black ooze, covering everything. | |
− | + | ===[[8.12 As Time Goes By]]=== | |
− | | | + | In 1958, desperate to escape the [[demon]] [[Abaddon]], [[Henry Winchester]] casts a spell made with a [[blood spell|blood sigil]], which involved an [[Angel Lore|angel]]'s feather, tears of a [[dragon]] and a pinch of the sands of time to find his son [[John Winchester]] in the future to help him protect a mysterious box from the secret order known as the [[Men of Letters]]. Henry instead finds [[Sam]] and [[Dean]] in 2013 and is confused as to why he wasn't taken to John. Before he can explain what is going on, Abaddon follows him through the portal and proves immune to [[Ruby's knife]], forcing them to flee. Henry is horrified to learn that John is dead and explains who he is and why he is there, though he doesn't like working with [[hunters]]. After Sam learns what [[Key to the Bunker|the box]] is from a survivor of the order, Abaddon reveals herself and captures Sam. At the same time, Henry, after learning what happened to John and that he apparently never made it back to his time, tries to travel back to an hour before Abaddon arrived so he can change things but is foiled by Dean. The two are forced to make a deal with Abaddon to save Sam's life, but it is actually a trap: Henry shoots a [[Devil's trap (symbol)|devil's trap]]-engraved bullet into Abaddon's head, binding her in place and to her [[meatsuit]]. Dean then decapitates her with the intention to cut her up into little pieces and bury her in concrete to forever trap her. However, Henry is mortally wounded in the fight and dies, never to return to his own time. |
− | | | ||
− | ' | ||
− | |||
− | ' | + | ===[[9.21 King of the Damned]]=== |
+ | Using the [[blood spell]] [[Abaddon]] travels back in time to 1723, to Leith, Scotland. There she finds [[Crowley]]'s son [[Gavin MacLeod]], and brings him back to the present day to use as leverage to get Crowley to help her kill Sam and Dean. | ||
− | + | After Abaddon is killed, the Winchesters tell Crowley they must return Gavin to his own time, or it may have an unknown ripple effect on events. Crowley protests, knowing Gavin is destined to die soon in the past. He manages to escape with Gavin. He leaves Gavin to live in the present day, saying that they mustn't ever see each other again. | |
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− | |||
− | |||
− | + | ===[[11.14 The Vessel]]=== | |
+ | Learning that the [[Hand of God]] will go down with the ''[[USS Bluefin]]'', Dean suggests traveling back in time to the ship to retrieve the Hand of God before the ship sinks. Dean doesn't believe they can mess with history as the ship sinks so there's nothing to mess with. [[Lucifer]] transports Dean aboard the ship, but is kept out himself by special warding put in place by [[Delphine Seydoux]]. Dean is able to convince Delphine of the importance of his mission as a German destroyer commanded by one of the [[Thule Society]] attacks. Delphine unleashes the power of the Hand of God as Lucifer returns Dean to the present, obliterating the ''Bluefin'' and sinking the German destroyer. | ||
− | + | In the present, after [[angel banishing sigil|banishing]] Lucifer, Dean tells Sam that he did nothing in the past but watch the events unfold. Dean questions Sam on the fate of the German ship and he confirms that while the wreckage of the ''Bluefin'' was never found, the German ship's wreckage was. | |
− | + | ===[[12.13 Family Feud]]=== | |
− | ===[[ | + | The repercussions of [[Gavin MacLeod]] being taken from 1723 and not dying when his ship, ''The Star'', sank was that the love of his life, [[Fiona Duncan]], snuck aboard the ship hoping to find him. After she is found out she is subjected to scorn, abuse and rape. Due to her childhood teacher not helping her and condoning what happened, Fiona became a [[vengeful spirit]] and began taking violent action against any teachers or authority figures she would come across at the museums where her tether, a locket, resided after being taken out of storage and put on display six months prior. |
− | |||
− | + | When [[Sam]] and [[Dean]] realize the best way for them to deal with Fiona is to send Gavin back to 1723, erasing what happened to her on ''The Star'' and putting the timeline back to how it was meant to be, Gavin agrees. At the [[Men of Letters Bunker]] Sam prepared the [[blood spell]], to send Gavin back, which Rowena had tweaked to allow Gavin to be sent back without the need of a blood relative in 1723. As Sam performed the ritual, Fiona appeared next to Gavin and the two embraced as Gavin was sent back to 1723, effectively erasing all the murders Fiona committed as a ghost. | |
− | |||
− | ===[[ | + | ===[[14.13 Lebanon]]=== |
− | + | Dean wishes on a [[Baozhu]] (a magic pearl that grants what the heart desires) in the hope of ridding [[Michael (Apocalypse World)]] from his mind, but instead it brings [[John Winchester]] from 2003. The disruption to the time line, starts to manifest - there is evidence that Dean is still hunting but it wanted by the FBI and that Sam is an internet famous [[Ted Talk Sam|corporate lawyer]]. It is obvious this would mean Mary will not be brought back from the dead, so John agrees he must return. Sam smashes the Baozhu and John returns to 2003. He wakes up in the Impala, thinking he has dreamed the whole thing. | |
− | ===[[ | + | ==Apocrypha== |
− | + | [[Sam]] and [[Dean]] also traveled through time in the novel ''[[Supernatural: War of the Sons]]'', when renegade [[angel]] Don -- full name Abaddon -- sends them back in time to New York 1954. He claims that he wishes to help them recover the 'War Scroll,' a scroll containing a battle plan that would allow the brothers to defeat [[Lucifer]], but when the Scroll is revealed to contain only the names of the angelic bloodlines and the humans who will be their [[vessel]]s, Dean and Sam refuse to use it, realizing that Don's true role was to attempt to convince the brothers to accept their role and allow the [[Apocalypse]] to proceed. Having returned to their time, Dean and Sam trick Don into attracting the attention of the other angels, allowing the angels to kill him while [[Castiel]] takes them to safety. | |
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− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | === | + | ==Trivia== |
− | Dean and | + | {{Quotation |
+ | |title= | ||
+ | |text= The time paradox was discussed in the writer’s room with a light touch because I think it gave us all headaches. Like for instance I have a theory about this episode that I don’t think we even talked about that this was a closed ended loop that Dean always goes back in time and instigates the events that happen in this episode which caused Sam and Dean to be put on this path which caused them to run into Castiel who sent Dean back in time. | ||
− | + | Jensen called us to say, | |
− | |||
− | + | “I’m the one who talked my dad into buying the Impala? But I don’t understand that because if I hadn’t have gone back in time he wouldn’t have had the Impala.” | |
− | + | Again it’s a real mind-bender concept and we had to talk it through –- it's funny the difference between Bob Singer and I proceeded to talk him through, | |
− | |||
− | + | “Well there’s this time loop and in my mind it’s this closed circle and he’s always going back–” | |
− | |||
− | |||
− | |||
− | + | And you know all these concepts that I really don’t understand about the inevitability of fate and time travel and then Bob takes a beat and – I love it, it’s perfect timing – he just takes a beat and says in this typical voice, | |
− | |||
− | + | “You got no problem with the demons but you got a problem with this?” | |
− | |||
− | == | + | |author= [[Eric Kripke]] |
− | + | |source= [[Season 4 DVD and Blu-Ray]]; Commentary on [[4.03 In the Beginning]] | |
+ | }} | ||
− | = | + | {{Quotation |
− | + | |title= | |
+ | |text= | ||
+ | '''Eric:''' There was this whackadoodle notion that Ben and I came up with, where Future Dean had already gone through the experiences as Past Dean, where Future Dean was like "I know why you're here, because five years ago I went through the same experience … and every line you're about to say I've already said it. And time is cyclical!" | ||
+ | And we were congratulating ourselves for being so smart...We showed it to Bob – and it’s a perfect model of why Bob is so invaluable to Supernatural ... and he's like "What the hell is this?" And we're like "You see it's cyclical, time is cyclical..." | ||
− | + | '''Ben:''' Do you remember we would come to his office and we would draw pictures of it. | |
− | |||
− | + | '''Eric:''' Yeah, we were literally drawing a diagram of the nature of time and time travel in Bob's office. And he gives you this wonderful dry look and he's like "You'll be drawing that for the audience?" | |
− | + | |author= [[Eric Kripke]] and [[Ben Edlund]] | |
+ | |source= [[Season 5 DVD and Blu-Ray]] (commentary on [[5.04 The End]]) | ||
+ | }} | ||
+ | ==See also== | ||
+ | * [[Time Loop]] | ||
+ | * [[Alternate Universe]] | ||
+ | * [[Altered Reality]] | ||
+ | * [[Blood Sigil]] | ||
+ | * [[Flashbacks]] | ||
− | [[Category: Library]] | + | [[Category:Canon]][[Category:Library]][[Category:Supernatural Abilities]] |
Latest revision as of 00:44, 29 June 2022
![](/images/thumb/0/0a/Frontierlandpromostill.jpg/400px-Frontierlandpromostill.jpg)
Contents
- 1 History
- 2 Episodes
- 2.1 4.03 In the Beginning
- 2.2 5.04 The End
- 2.3 5.13 The Song Remains the Same
- 2.4 6.17 My Heart Will Go On
- 2.5 6.18 Frontierland
- 2.6 6.20 The Man Who Would Be King
- 2.7 7.12 Time After Time
- 2.8 8.12 As Time Goes By
- 2.9 9.21 King of the Damned
- 2.10 11.14 The Vessel
- 2.11 12.13 Family Feud
- 2.12 14.13 Lebanon
- 3 Apocrypha
- 4 Trivia
- 5 See also
History
Time travel is a method used to take a person or entity forward or backward in time. The rule of time travel is that the timeline is fixed, traveling to the past will not alter events that have already happened. However after the Apocalypse was averted, these rules were changed, allowing for the past to be altered as when Balthazar prevented the Titanic from sinking, which had ramifications throughout the subsequent years.
In certain cases, it was shown that any changes made to the past may take some time to catch up in the present, such as when John Winchester was plucked from 2003 to 2019 and time slowly began adjusting, until John was sent back, reverting the world back to the original timeline.
Time travel can be associated with alternate universes, time loops and reality warping.
Characters
Characters and beings that have shown the ability (whether natural or through magic) to manipulate or bend time include:
- Angels
- Archangels
- Gods
- Humans
- Reapers
Episodes
4.03 In the Beginning
Castiel sends Dean back to Lawrence in 1973. Dean tries, and fails, to kill Azazel. Castiel tells him the purpose of the trip was for Dean to learn how the involvement of the Winchester family with Azazel began, and hopefully help Dean, and Heaven, work out what his ultimate endgame was – and Sam's role in it.
5.04 The End
Zachariah created a future where Sam and Dean were no longer hunting together and haven't been for five years. It's the year 2014 and most of the population are either dead or have become zombies due to the Croatoan virus. Originally conceived a time travel piece, the episode ended up presenting the 2014 future as an alternate universe constructed by Zachariah.
5.13 The Song Remains the Same
On Heaven's instruction, Anna goes back to 1978 to kill John and Mary Winchester, in order to stop Sam from ever being born. Castiel takes Sam and Dean back to stop her, and is severely weakened by the effort. Michael ends up intervening to save John and Mary, erasing their memories of the events.
6.17 My Heart Will Go On
This episode involves both time travel and an alternate universe.
Castiel orders Balthazar to stop the sinking of the Titanic so that there would be 50,000 souls in existence that otherwise wouldn't be (the descendants of passengers) in order to use the souls to gain power in his fight against Raphael. The act causes a cascade of changes through history:
- Dean drives a Mustang which has the original plates the Impala had – KAZ 2Y5.
- The Impala line of cars was not produced.
- Ellen and Jo are alive.
- Ellen and Bobby are married and Singer Salvage Yard is called B & E Scrap Yard. Bobby's house appears neater than usual.
- Jo leads a team of hunters.
- In 2.17 Heart we learned that Sam knew Dean always played 'scissors' when they did rock, paper, scissors, so Sam always won. Here Sam loses, although Dean still throws scissors.
- In the travel agency we see Cuba is a resort island destination – "America's Favorite Holiday Destination" – and Detroit was voted "America's Top City."
- Celine Dion is a "destitute lounge singer somewhere in Quebec."
- Cas transports Sam and Dean to "White Russia." This is an old term for Belarus and may be a hint that the Russian revolution of 1917 that lead to the formation of the Soviet Union, didn't occur.
- Obviously the movie the Titanic was never made!
Eventually, in order to save Sam and Dean, Balthazar is forced to return to the past and unsink the Titanic, changing everything back though Castiel makes sure Sam and Dean remember what happened.
6.18 Frontierland
Dean and Sam get Castiel to send them back to 1861 after reading that Samuel Colt shot a phoenix, the ashes of which they believe will kill Eve. Meanwhile Castiel is weakened after being attacked by Rachel and must draw on power from Bobby's soul to bring them back. When Sam and Dean are pulled back to the present day without the ashes, they think the cause is lost, but then a courier arrives. He delivers a package to Sam sent 150 years ago by Samuel Colt. It contains Sam's phone – and a bottle containing the ashes of the phoenix.
6.20 The Man Who Would Be King
Raphael sends Castiel a week back in time.
7.12 Time After Time
Chronos, the God of Time, can travel through time by taking energy from three humans. Dean charges him as he is attacking a man and is pulled back in time with him to 1944. Chronos evades Dean, but his killings in this year have attracted the notice of hunter Eliot Ness, who teams up with Dean.
In the present, Sam and Jody Mills find a spell to summon Chronos to their time and location. When the now elderly Lila Taylor reveals that she witnessed Chronos throttling Dean in 1944, and that the clocks stopped at 11:34 that night, Sam and Jody are able to summon Chronos while he is attacking Dean, bringing both of them to the present. Sam stabs Chronos with the stake that came with them. Chronos, dying, tells Sam that his future is full of black ooze, covering everything.
8.12 As Time Goes By
In 1958, desperate to escape the demon Abaddon, Henry Winchester casts a spell made with a blood sigil, which involved an angel's feather, tears of a dragon and a pinch of the sands of time to find his son John Winchester in the future to help him protect a mysterious box from the secret order known as the Men of Letters. Henry instead finds Sam and Dean in 2013 and is confused as to why he wasn't taken to John. Before he can explain what is going on, Abaddon follows him through the portal and proves immune to Ruby's knife, forcing them to flee. Henry is horrified to learn that John is dead and explains who he is and why he is there, though he doesn't like working with hunters. After Sam learns what the box is from a survivor of the order, Abaddon reveals herself and captures Sam. At the same time, Henry, after learning what happened to John and that he apparently never made it back to his time, tries to travel back to an hour before Abaddon arrived so he can change things but is foiled by Dean. The two are forced to make a deal with Abaddon to save Sam's life, but it is actually a trap: Henry shoots a devil's trap-engraved bullet into Abaddon's head, binding her in place and to her meatsuit. Dean then decapitates her with the intention to cut her up into little pieces and bury her in concrete to forever trap her. However, Henry is mortally wounded in the fight and dies, never to return to his own time.
9.21 King of the Damned
Using the blood spell Abaddon travels back in time to 1723, to Leith, Scotland. There she finds Crowley's son Gavin MacLeod, and brings him back to the present day to use as leverage to get Crowley to help her kill Sam and Dean.
After Abaddon is killed, the Winchesters tell Crowley they must return Gavin to his own time, or it may have an unknown ripple effect on events. Crowley protests, knowing Gavin is destined to die soon in the past. He manages to escape with Gavin. He leaves Gavin to live in the present day, saying that they mustn't ever see each other again.
11.14 The Vessel
Learning that the Hand of God will go down with the USS Bluefin, Dean suggests traveling back in time to the ship to retrieve the Hand of God before the ship sinks. Dean doesn't believe they can mess with history as the ship sinks so there's nothing to mess with. Lucifer transports Dean aboard the ship, but is kept out himself by special warding put in place by Delphine Seydoux. Dean is able to convince Delphine of the importance of his mission as a German destroyer commanded by one of the Thule Society attacks. Delphine unleashes the power of the Hand of God as Lucifer returns Dean to the present, obliterating the Bluefin and sinking the German destroyer.
In the present, after banishing Lucifer, Dean tells Sam that he did nothing in the past but watch the events unfold. Dean questions Sam on the fate of the German ship and he confirms that while the wreckage of the Bluefin was never found, the German ship's wreckage was.
12.13 Family Feud
The repercussions of Gavin MacLeod being taken from 1723 and not dying when his ship, The Star, sank was that the love of his life, Fiona Duncan, snuck aboard the ship hoping to find him. After she is found out she is subjected to scorn, abuse and rape. Due to her childhood teacher not helping her and condoning what happened, Fiona became a vengeful spirit and began taking violent action against any teachers or authority figures she would come across at the museums where her tether, a locket, resided after being taken out of storage and put on display six months prior.
When Sam and Dean realize the best way for them to deal with Fiona is to send Gavin back to 1723, erasing what happened to her on The Star and putting the timeline back to how it was meant to be, Gavin agrees. At the Men of Letters Bunker Sam prepared the blood spell, to send Gavin back, which Rowena had tweaked to allow Gavin to be sent back without the need of a blood relative in 1723. As Sam performed the ritual, Fiona appeared next to Gavin and the two embraced as Gavin was sent back to 1723, effectively erasing all the murders Fiona committed as a ghost.
14.13 Lebanon
Dean wishes on a Baozhu (a magic pearl that grants what the heart desires) in the hope of ridding Michael (Apocalypse World) from his mind, but instead it brings John Winchester from 2003. The disruption to the time line, starts to manifest - there is evidence that Dean is still hunting but it wanted by the FBI and that Sam is an internet famous corporate lawyer. It is obvious this would mean Mary will not be brought back from the dead, so John agrees he must return. Sam smashes the Baozhu and John returns to 2003. He wakes up in the Impala, thinking he has dreamed the whole thing.
Apocrypha
Sam and Dean also traveled through time in the novel Supernatural: War of the Sons, when renegade angel Don -- full name Abaddon -- sends them back in time to New York 1954. He claims that he wishes to help them recover the 'War Scroll,' a scroll containing a battle plan that would allow the brothers to defeat Lucifer, but when the Scroll is revealed to contain only the names of the angelic bloodlines and the humans who will be their vessels, Dean and Sam refuse to use it, realizing that Don's true role was to attempt to convince the brothers to accept their role and allow the Apocalypse to proceed. Having returned to their time, Dean and Sam trick Don into attracting the attention of the other angels, allowing the angels to kill him while Castiel takes them to safety.
Trivia
The time paradox was discussed in the writer’s room with a light touch because I think it gave us all headaches. Like for instance I have a theory about this episode that I don’t think we even talked about that this was a closed ended loop that Dean always goes back in time and instigates the events that happen in this episode which caused Sam and Dean to be put on this path which caused them to run into Castiel who sent Dean back in time.
Jensen called us to say,
“I’m the one who talked my dad into buying the Impala? But I don’t understand that because if I hadn’t have gone back in time he wouldn’t have had the Impala.”
Again it’s a real mind-bender concept and we had to talk it through –- it's funny the difference between Bob Singer and I proceeded to talk him through,
“Well there’s this time loop and in my mind it’s this closed circle and he’s always going back–”
And you know all these concepts that I really don’t understand about the inevitability of fate and time travel and then Bob takes a beat and – I love it, it’s perfect timing – he just takes a beat and says in this typical voice,
“You got no problem with the demons but you got a problem with this?”– Eric Kripke, Season 4 DVD and Blu-Ray; Commentary on 4.03 In the Beginning
Eric: There was this whackadoodle notion that Ben and I came up with, where Future Dean had already gone through the experiences as Past Dean, where Future Dean was like "I know why you're here, because five years ago I went through the same experience … and every line you're about to say I've already said it. And time is cyclical!"
And we were congratulating ourselves for being so smart...We showed it to Bob – and it’s a perfect model of why Bob is so invaluable to Supernatural ... and he's like "What the hell is this?" And we're like "You see it's cyclical, time is cyclical..."
Ben: Do you remember we would come to his office and we would draw pictures of it.
Eric: Yeah, we were literally drawing a diagram of the nature of time and time travel in Bob's office. And he gives you this wonderful dry look and he's like "You'll be drawing that for the audience?"– Eric Kripke and Ben Edlund, Season 5 DVD and Blu-Ray (commentary on 5.04 The End)