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An FBI agent recruits his brother, a mathematics genius, to help solve crimes. (Learn more)

Starring: David Krumholtz, Rob Morrow, Peter MacNicol (View All)

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The Fifth Man

Episode 20 | Season 5  (2008-2009)
(Airdate Apr 24, 2009)

When the FBI is called in to investigate a series of home invasions, the team uses Charlie and his math skills to help profile the suspects, but when his calculations go awry during a raid, Don suffers a life-threatening injury.

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