Chris Vance

Dexter has cast British actor Chris Vance in a multi-episode arc.

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The Showtime series, which has had nearly as many casting announcements for its fifth season as Dexter has had victims, will welcome Vance as Cole, an articulate personal aide to a popular business man. He'll appear in at least three episodes, a rep for the series confirms.

Vance, 38, recently guest starred on Burn Notice, and played a memorable role as Whistler on Fox's Prison Break. He joins a line-up of guest stars this season that includes Johnny Lee Miller, April Lee Hernandez, Shawn Hatosy, Julia Stiles, Katherine Moennig and Peter Weller.

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The casting news was first reported by Entertainment Weekly.