Chad Lowe as Thomas Coville on "Supergirl"

Actor and director Chad Lowe, who played Aria’s dad Byron Montgomery on Pretty Little Liars, guest starred on CW’s Supergirl.

She didn’t come to answer his prayers. #Supergirl pic.twitter.com/LByWkuDOmV

— Supergirl (@TheCWSupergirl) October 31, 2017

Chad Lowe appeared in Supergirl episode 3x04 “The Faithful” as cult leader Thomas Coville. The Cult of Rao prays to Supergirl. Thomas Coville worships Supergirl because she saved his life. He was on the airplane that Kara saved the night she became Supergirl.

Thomas Coville tells people to put themselves in danger so that Supergirl can save them. He finds out Supergirl’s true identity when Kara confronts him.

Watch Chad Lowe in the trailer for Supergirl episode 3x04 "The Faithful":

If you missed Supergirl “The Faithful”, you can watch the episode on Amazon here.

Hopefully, we’ll see more of Chad Lowe on future episodes of Supergirl.