New “Vampire Diaries,” “Supernatural” Tonight

For the first Thursday of October, the CW has all new episodes of “The Vampire Diaries” and “Supernatural.”

THE VAMPIRE DIARIES: (8:00-9:00 p.m. ET) — “Family Ties “

ELENA AND STEFAN ATTEND THE FOUNDER’S PARTY. Elena asks Stefan to escort her to the town’s annual Founder’s Party. Vicki gets Tyler to ask her to the party, then accuses him of trying to hide their relationship from his family. Zach reveals a useful family secret to Stefan. At the party, Damon tells Elena a story about the Salvatore family’s past, leaving Elena with questions that Stefan refuses to answer. Finally, Stefan takes action to get Damon out of his life for good.

SUPERNATURAL: (9:00-10:00 p.m. ET) — “The End “

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 (#504).