TV Legend Betty Buckley Joins 'Supergirl'

Damian Holbrook
the CW

From Eight is Enough and Oz to Pretty Little Liars and The Leftovers, Betty Buckley has been bringing class and sass to the small screen for almost as long as she's been a Broadway legend. And now, the Tony winner, who originated Grizabella in "Cats" on Broadway, is set to make a new memory as Patricia Arias, the adoptive mother of Supergirl's villain-in-the-making, Samantha (Odette Annable).

According to The CW, the Arias women have been estranged since Sam became a teen mom and "their relationship is made all the more complex by the secrets Patricia holds." Given that Sam is actually Reign, the genetically designed, world-killing weapon we first peeped in May's season finale being sent to Earth from a cabal of hooded Kryptonians before the planet exploded, it's highly possible that one of those secrets the "honest, but stubborn" Patricia is sitting on includes the still-unaware Sam's otherworldly and lethal origins.

Odette Annable Joins 'Supergirl': 'Everyone Will Have a Relationship With Sam'

Odette Annable Joins 'Supergirl': 'Everyone Will Have a Relationship With Sam'

The actress joins the CW superhero drama as DC Comics villain Reign

Buckley is set to make her first appearance in "Wake Up,' the third season's seventh episode.

Supergirl, Season Premiere, Oct. 9, 8/7c, The CW