'Sullivan's Crossing' is set to look different in season 4 as Scott Patterson has officially exited the series. Executive producer and showrunner Roma Roth told Us Weekly that season 3 ended with Sully leaving for Ireland and season 4 picks up the next day with him still overseas. Roth said Sully is not physically present this season but remains an important part of the show's world with potential to return. Based on Robyn Carr's books, the show follows neurosurgeon Maggie played by Morgan Ko
