When Fringe kicks off its fifth and final season this fall, it will be down one castmember.

Sources confirm to TVLine that Seth Gabel will not be back as a series regular.

In a recent interview with TVLine, Fringe‘s leading lady, Anna Torv, noted that the odds of Gabel returning were slim.

“I don’t think [we’ll see Lincoln again],” she lamented. “Unless we go to the other side, no” — a prospect made less likely by the season-ending closing of the bridge between the two worlds.

A Fringe insider, however, isn’t ruling out a guest appearance or two by Gabel during the final 13 episodes.