Marisa Coughlan

Bones' Booth this season may face his toughest case — that being one he cannot investigate himself, due to a conflict of interest. That means someone else will be putting folks in the hot seat... and perhaps making Seeley's temperature rise, as well.

Marisa Coughlin, who perhaps most notably fronted the Lifetime series Side Order of Life, has been tapped to guest-star in a midseason episode of the hit Fox series, TVGuide.com has learned exclusively. Coughlin will play Payton Perotta, an FBI agent who is brought in to crack a case after Booth has to remove himself. As part of her already tricky task, Perotta will have to interrogate none other than Booth.

Also appearing in the episode (and boasting a more direct link to its title, "Fire in the Ice") will be ice hockey great Luc Robitaille, playing himself.