The CW has released an official description and preview images for the April 22 episode of Supernatural.
The episode has the very weird title of “Alex Annie Alexis Ann.”
Here are some pics:
SUPERNATURAL

SHERIFF MILLS TRIES TO SAVE A YOUNG GIRL FROM A VAMPIRE NEST — Sheriff Mills (guest star Kim Rhodes) calls Sam (Jared Padalecki) and Dean (Jensen Ackles) after she kills a vampire who attacked a prisoner named Annie (guest star Katherine Ramdeen). They discover Annie was kidnapped by a family of vampires who use her as bait to lure in humans they can then feed on. Sheriff Mills tries to rescue Annie from her captors, but finds out the hard way that family always comes first. Stefan Pleszczynski directed the episode written by Robert Berens (#919).