“He’ll be back for the last third of the season,” Safran revealed. “When Jack returns, he and Chuck are on good terms. Their story is more of a fun story than an antagonistic story. It’s really twisty and comic. And there might be some secrets that Jack will help Chuck to uncover.”
If you're unfamiliar with Desmond, he also plays Detective Quinn on Showtime's Dexter. And, he's kinda a hottie. Score!