Lazarus is a fine, body-switching episode. Although it's difficult to tell who got the better end of the deal. True, Jack Willis' body is still alive, but he has another man's soul in him. Warren Dupre has lost his body, but his soul is very much alive in another man's body. What a perfect disguise for a criminal, as an officer of the law! In Fire, two episodes before, Mulder had a past love interest show up. In Lazarus, it's Scully's turn, as Jack Willis is her former FBI academy instructor whom she dated. But the results are not similar, as Mulder shows no hints of jealousy at all. In Tempus Fugit, Scully comments that in the four years she's known Mulder he's never remembered her birthday. In Lazarus, Mulder gives Scully a birthday card signed by Willis two months early to test him. I wouldn't exactly call that never remembering. Another excellent guest performance given by Christopher Allport as Jack Willis. Plus, this episode has a nice little twist at the end that surprised me.