Battlestar Galactica alum James Callis is stirring up trouble again, this time on CBS’ CSI (Wednesday, 10/9c) – and TVLine has a first look at his investigative journalist “bugging” Nick Stokes (and in doing so, setting the stage for a Gil Grissom shout-out).

Callis, but one of a flurry of familiar faces popping up in the long-running procedural’s Season 13 finale, guest-stars as …READ PREVIEW & WATCH VIDEO