Mulder (David Duchovny) is back! At least in flashbacks he is, as Doggett (Robert Patrick), Scully (Gillian Anderson) and Skinner (Mitch Pileggi) continue their search for the missing agent, and a case he was working on before his disappearance. Frank Spotnitz pens The Gift, which first aired on 4 February, 2001. While Scully continues to…