The CW has released a very short official description for the Wednesday, April 6 episode of Supernatural.
The title of the episode is “Hell’s Angel” and you can read the synopsis below.
THE EPIC BATTLE FOR POWER BEGINS – Lucifer (Misha Collins) takes a trip home and tries to assert himself into Heaven. Crowley (Mark A. Sheppard) tells Sam (Jared Padalecki) and Dean (Jensen Ackles) he has a way to take down Amara (guest star Emily Swallows). Phil Sgriccia directed the episode written by Brad Buckner and Eugenie Ross-Leming (#1118). Original airdate 4/6/2016.