Castle is not wanting for fun guest stars.

On this week's 2011 premiere, Laura Prepon stepped into the shoes of the actress behind Nikki Heat. On "Poof! You're Dead," meanwhile, viewers will be treated to the handsome sight of Gilles Marini.

The former Dancing with the Stars contestant and Brothers & Sisters recurring player will portray a magician. As seen here, Castle and Beckett question him over the death of the owner of a historic magic shop:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.