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A [http://en.wikipedia.org/wiki/Revenant_(folklore) revenant] is a visible [[ghost]] or animated corpse that returns to terrorize the living, usually people it knew in life. Unlike the [[zombie]], a revenant is not under another person's control, and has returned from the grave on its own for a specific and often personal purpose. Revenants react to [[silver]] and can only be stopped by nailing them into their coffin's with silver spikes.

In ==Episodes=====[[4.01 Lazarus Rising]], ===After [[BobbyDean]] accuses is resurrected, he makes his way to [[DeanBobby]] of being 's. When Dean approaches him, Bobby lunges forward with a [[shapeshiftersilver]] or a revenant. knife, Dean proves evades him and tries to convince him that he's neither is the real Dean by cutting himself telling him information only he would know. Bobby approaches Dean and tries to cut him again, with Dean telling him isn't a [[silvershapeshifter]] . Bobby goes on to accuse him of being a revenant, so need takes the silver knifeand cuts hims arm, proving to Bobby he is neither a shifter nor revenant.

In ===[[5.15 Dead Men Don't Wear Plaid]]===When [[Sam]] and [[Dean]] learn that [[Bobby]]'s wife has come back from the dead, they question him as to whether she is [[zombie]] or revenant. Bobby, however is just as confused. Telling Sam and Dean that she has had no reactions to [[salt]], [[silver]] or [[holy water]]. ===[[8.06 Southern Comfort]] ===Ending up on the same case as Sam and Dean, [[Garth]] takes a call from a [[hunter ]] asking how to deal with a revenant. Garth tells him to get a casket and some [[silver]] spikes, then nail it in and bury it. He also warns that getting bit will hurt like hell, but will not turn you into one. ===[[13.04 The Big Empty]]===Sam and Dean take on a case where the deceased wife of the victim, Wes Bailey, appeared to have stabbed her husband and walked out the front door. Confused as to why a ghost would leave that way, and the nothing registering on the [[EMF]], a revenant is suggested. When Jack questions what a revenant is, Sam tells him it is like a [[zombie]].  When there EMF meter shows no signs of ghost activity at the second crime scenes, Sam and Dean become convinced they are dealing with revenants, and head to the cemetery to dig up the grave of Erica Bailey. Once dug up, they find the body of Erica still in the coffin, taking their theory back to a ghost, prompting Dean to salt and burn Erica's body.