"We brought him back. So, we have some good scenes with him as a ghost," Campbell told UPI recently at New York Comic Con. "He's funny. Lee is funny. Lee has a good sense of humor. This season, now, Lee is way more relaxed because he is like: 'I've got this. I know what this is now.' You come on to a new show, you don't know what the hell it is. You don't know any of these people. He is comfortable with me now and, so, he's great."