The Big C Lands a Big Name: Susan Sarandon

The Big C‘s cancer-afflicted heroine is getting a high profile confidante.

Susan Sarandon is joining the Showtime series for a multi-episode arcduring the upcoming third season, according to The Hollywood Reporter.

Showtime Boss Defends Dexter‘s Incesty Twist, Offers Homeland Season 2 Intel and More!

The Oscar-winning actress will play Joy, a cancer survivor who befriends Laura Linney’s Cathy. She uses “her cancer experience in a unique way trying to inspire other people,” creator Darlene Hunt tells THR. “She makes Cathy question whether she’s doing enough with her own cancer experience.”

The new season, premiering Sunday, April 8, will also feature Victor Garber (Alias) in a guest spot. The Showtime dramedy previously employed Idris Elba (Luther) and Hugh Dancy (The Jane Austen Book Club) in meaty arcs.