Treat Williams has signed on to star in the medical drama, Heartland for TNT and Warner Horizon Television.

The Hollywood Reporter says he will play Nathaniel Grant, an intense, sleep-deprived surgeon in the high-stakes world of heart transplant surgery, whose devotion to his work takes a toll on his relationships, including his estranged wife, who works at the same hospital as the organ-recovery coordinator.

If the show gets picked up, look for Heartland to air sometime in the fall on TNT.