Here's what we know about episode 21.

The official press release

All in the Family” — (9:00-10:00 p.m. ET)

THE WAR CONTINUES – Amara (guest star Emily Swallows) shows Dean (Jensen Ackles) how she’s torturing Lucifer (Misha Collins). Worried for Castiel, Dean and Sam (Jared Padalecki) come up with a plan to rescue him from Amara’s clutches. Thomas J. Wright directed the episode written by Eugenie Ross-Leming & Brad Buckner (#1121). Original airdate 5/11/2016.

The official trailer



The sneak peek



The Second sneak peek



A TvLine interview with Rob Benedict about how God will deal with Sam, Dean and Amara and one with Mashable. Although these seem to pertain to Wednesday's episode they may cover other future episodes.

Finally the promotional pictures

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So Chuck finally reveals himself to Sam and Dean. How do you think they will react to this information? Is Amara really hiding herself from God, even though she has been doing everything she can to get his attention? Why does Amara show Dean how she is torturing Casifer? Is she trying to draw Dean out? Will Sam and Dean be able to rescue Casifer? Will God help them expel Lucifer from Cas' body? Let us know your thoughts in the comments or in the discussion thread for episode 21.