White Collar Guest Stars Alert: Callie Thorne and Kirk Acevedo

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Almost as much as strong ratings, a sure sign of a successful TV show is the guest stars it's able to snag.

With that in mind, White Collar really is on its way to being a hit.

This week's episode of the USA series - which focuses on Caffrey and Burke's attempt to find a valuable Bible for a mobster - will feature Callie Thorne and Kirk Acevedo is supporting roles.

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Thorne will play an art historian. She's best known as Sheila on Rescue Me.

Acevedo, meanwhile, will appear as an FBI nemesis of Peter’s. He was most recently seen on Fringe.

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

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