Last week we got a glimpse at a possible future for Sam, as Lucifer's permanent meat suit; next week, with Supernatural 5.04 "The End," we'll get a look at Dean's future - and perhaps the answer to whether or not Sam will ultimately give in to the fallen angel's demands. We have to intriguing clips ahead.

Dean has been sent on time trips before.  Last season he went back in time and discovered that his awesome hunting genes may have come from his mommy's blood-line after-all.  This week's time trip is courtesy of Zacharia, and is intended to show Dean the consequences of not giving his skin over to the Archangel Michael.  Demon zombies.  Yeah, you heard right.  Demon zombies, and a pot smoking-womanizing Castiel.  There is no hope. Could this dark future be true, or a crafty ploy by Zacharia intended to scare Dean into giving up his flesh?  We don't have the answer to that, but we do have a couple of clips to help get you in the 'Supernatural' state of mind.

Supernatural 5.04 "The End" will Air October 1st, at 9:00pm/est on TheCW.

TWO DEAN WINCHESTERS? — Sam (Jared Padalecki) tells Dean (Jensen Ackles) he wants to rejoin Dean in the battle of the Apocalypse, but Dean tells Sam that they are better off apart.  Later, Dean awakens five years in the future in an abandoned city and is attacked by humans who have been infected with a demonic virus that turns humans into Zombies.  Zachariah (guest star Kurt Fuller) appears to Dean and explains that this is the world that exists as a result of Dean saying no to helping the angels fight Lucifer.  Dean meets up with Future Dean, who tells him that the virus is the Devil’s endgame for destroying mankind.  Misha Collins also stars.  Steve Boyum directed the episode written by Ben Edlund