The CW has released an official description and preview images for the May 6 episode of Supernatural.
The title of the episode is “King Of The Damned” and here is how they describe it. The new images follow.
ABADDON BLACKMAILS CROWLEY — Castiel (Misha Collins) captures one of Metatron’s angels (guest star Gordon Woolvet) and asks Sam (Jared Padalecki) and Dean (Jensen Ackles) for help with the interrogation. Dean eagerly accepts, which doesn’t go unnoticed by Sam. Meanwhile, Abaddon (guest star Alaina Huffman) demands Crowley (Mark Sheppard) help her kill Sam (Jared Padalecki) and Dean (Jensen Ackles). When he refuses, she reveals her shocking bargaining chip. Also, Castiel (Misha Collins) sets a meeting with Gadreel (guest star Tahmoh Penikett). PJ Pesce directed the episode written by Eugenie Ross-Leming & Brad Buckner (#921).