TMDb/Sullivan's Crossing TV Sullivan's Crossing season 4 premiere addresses Scott Patterson's sudden exit as Sully, with Maggie revealing he "just left" for Ireland, setting up a major ... April 29, 2026 AceShowbiz - Sullivan's Crossing wasted no time in confronting the sudden departure of Scott Patterson's character, Sully, in its season 4 premiere that aired on Monday, April 20. The show immediately acknowledged Sully's absence within the storyline, integrating explanations directly into the episode's dialogue and plot.