Kenny Johnson (The Shield, Sons of Anarchy) is joining Dexter‘s upcoming eighth and final season in a multi-episode arc, TVLine has learned exclusively.

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Johnson will play U.S. Marshall Cooper, a no-nonsense and formidable lawman who is hired by P.I. Jacob Elway (recurring guest star Sean Patrick Flanery) to hunt down an infamous criminal.

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Dexter‘s farewell season bows Sunday, June 30 at 9/8c.