Henry Ian Cusick, best known for memorably portraying Desmond on Lost, will be appearing on another JJ Abrams show this spring when he guest stars on Fringe!

TV Line has the scoop that Cusick will be appearing on Fringe as, “An FBI agent assigned to a Fringe case in this season’s 19th episode.”

We reported earlier that Fringe is looking for two alternate universe agents, but as we know, the FBI doesn’t exist in the alternate world, so Cusick may or may not have been cast as one of these agents.