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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Ultimatum
While tracking down a felon running a heroin ring inside a prison, Agent Ian Edgerton becomes a murder suspect when the informant he meets with ends up dead, sending a desperate Edgerton over the edge when he takes a member of Don's team hostage.
Guest Stars
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Christopher McDonald
as Frank Thompson
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Lou Diamond Phillips
as Special Agent Ian Edgerton
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Missi Pyle
as Janet Galvin
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Pablo Schreiber
as Tal Feigenbaum
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Marcus Chong
as Jones
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Andrew Hawkes
as Vincent Costello
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Donald Roman Lopez
as Felipe Garcia
Season 6 (2009-2010) Guide
