Designated Survivor is losing a key cast member. Deadline reports Natascha McElhone is leaving the ABC TV show for Hulu’s upcoming series The First.

On Designated Survivor, McElhone plays Alex Kirkman, the wife of Kiefer Sutherland’s lead character Tom Kirkman. The cast also includes Adan Canto, LaMonica Garrett, Kal Penn, Maggie Q, Malik Yoba, Paulo Costanzo, Zoe McLellan, Ben Lawson, Tanner Buchanan, and Mckenna Grace. The political thriller just premiered its second season earlier this week.

From Beau Willimon, The First “will follow the first human mission to Mars exploring the challenges of taking the first steps toward interplanetary colonization.” The cast also includes Sean Penn.

According to Deadline, McElhone will finish out season two of Designated Survivor before moving on to The First. The Hulu series is slated to debut in 2018.

What do you think? Do you watch Designated Survivor? Are you sad McElhone is leaving?