WILL HE OR WON'T HE? David's representative talked with TV Guide Online about David's possible return to film the X-Files series finale which will air this coming May and possible could be a two parter: WILL HE OR WON'T HE?: Scheduling conflicts would likely be the only thing that prevents David Duchovny from appearing in the two-part series finale of The X-Files (airing in May). "He's open to [coming back] availability permitting," the actor's rep tells TV Guide Online. Last week, series creator Chris Carter announced that the long-running Fox drama would not return next fall for a 10th season.