Stana Katic Gets Goofy With a Mystery Man Behind the Scenes of Castle Season 5, Episode 8 (PHOTOS)
We know! We know! It's none other than Lost alum Patrick Fischler, of course, who's set to guest star as an eyewitness named Leo Conrad in Episode 8, "After Hours."
Did you guess Stana's Castle co-star or did she have you stumped?