Dominic Monaghan returns to ABC

It seems Dominic Monaghan has been appearing in a new ABC commercial promoting upcoming shows on the network, and according to EW’s Michael Ausiello, ABC wants you to think it’s because the actor’s returning to Lost.

But he’s not.

Ausiello claims that Monaghan is instead joining the cast of a different hour-long drama on ABC as a full-time regular, and his appointment to the show is meant to be a major surprise. Okay, so… hour long drama, existing show… that narrows it down to Brothers & Sisters, Desperate Housewives, Grey’s Anatomy, and Private Practice. (There’s also Castle and Cupid, but I doubt either of those would elicit such secret-keeping about upcoming plots.) Which show do you think it will be?