Katherine Heigl is coming back to TV — again! The Grey’s Anatomy, State of Affairs, and Doubt vet is set to become a regular on the USA drama Suits, cable’s No. 1 show in producing spouses for the British royal family. She’ll unofficially replace departing star Patrick J. Adams, playing Katherine Wheeler, “a talented new partner at Pearson Specter Litt who challenges the status quo and will either become the firm’s greatest ally … or most powerful enemy.†Just like Stalin!