Key to the Bunker

The key to the Men of Letters' Bunker.

The key belonged to the Men of Letters and was kept in a box, which was decorated with their crest - the Aquarian Star. Inside the box contains the key to where they had stored all the knowledge that they had possessed. If the Box were to be hunted down by an "evil being" (demons, monsters, etc...) it can be safely stored in the area that they had placed all there scrolls and secrets since the area itself is branded with symbols to ward off every evil ever created.

It is now in possession of the Winchesters after his grandfather, Henry Winchester died at the hands of a demon, Abaddon while the demon was out hunting for it.

Episodes

8.12 As Time Goes By

In 1958 Abaddon, one of the Knights of Hell, was sent by party or parties unknown to kill the members of the group who were gathered in Normal, Illinois. They were gathered for the initiation of Henry Winchester and Josie Sands.

The Aquarian Star carved into the box holding the Bunker key.

Abaddon killed David Ackers and Ted Bowen, and blinded Larry Ganem. After Henry bursts through to find out what was happening, Larry, crawls up to Henry and entrusts him with a box, which contains the key to where all the knowledge the Men of Letters has collected is stored. She than went on to burn down their quarters before following Henry through the portal created by his blood spell. Sam, visits Larry Ganem, the other survivor of the incident, and to further his knowledge of the box asks him what he knows. After Larry explains everything, Abaddon, possessing Larry's wife kills Larry and captures Sam. Abaddon then calls Dean for a trade between Sam and Henry & the key. During the trade, Henry shoots Abaddon in the head with a bullet that had a devil's trap carved onto it. This immobilized Abaddon which allows Dean cuts her up into pieces. After Henry's death, Sam and Dean decide to find out if the Bunker is still intact.

8.13 Everybody Hates Hitler

Sam and Dean follow the coordinates provided by Larry, and find an underground Bunker, which they are able to enter using the key.

8.23 Sacrifice

Dean hands Kevin the key to the Men of Letters Bunker where he can be safely protected.

9.04 Slumber Party

In 1935, two Men of Letters, James Haggerty and Peter Jenkins use the key to enter the recently finished Bunker

9.16 Blade Runners

Sam and Dean flash the box holding the key when they are trying to get Cuthbert Sinclair's attention outside of his magically hidden mansion.