According to Deadline, the show "centers on Laurel, a young, fresh-faced Hill staffer whose first job in Washington, D.C. leads her to discover two things: The government has stopped working, and alien spawn have come to Earth and eaten the brains of a growing number of congressmen and Hill staffers."
Tveit will play Gareth, "a Republican operative whose wit is only trumped by his pragmatism. The Legislative Director to a top Republican senator, Gareth is smart, hardworking, and ultimately responsible for helping to save the world."
Co-producers Robert and Michelle King said, "We’re huge fans of his work — he’s spectacular on stage and screen — and think he’ll be a fantastic opponent-slash-love-interest for Mary Elizabeth Winstead."
"BrainDead" is set to premiere in summer 2016.