In Lily Sunder Has Some Regrets Lily Sunder (guest star Alicia Witt) steeps herself in black magic, honing her powers for over a century, waiting to exact revenge on a band of angels that murdered her family. Sam (Jared Padalecki) and Dean (Jensen Ackles) must work quickly to stop Castiel (Misha Collins) from becoming her next victim.
Thomas J. Wright directed the episode written by Steve Yockey.
Series: Supernatural Season 12 Episode 10
Airdate: 2 February 2017 at 8.00pm on The CW