Genre: Crime Drama, Mystery, Thriller
Premise: FBI agent Don Eppes recruits his younger brother, Charlie, a mathematical genius and college professor, to help solve some of Don's toughest cases. Although others at the bureau are skeptical of Charlie's involvement, he finds support in a colleague at the university where he teaches.
S04, E12 (First Aired: Jan. 18, 2008)
A serial rapist uses his position as a police officer to ensnare his victims.
S04, E13 (First Aired: Apr. 4, 2008)
During a bust of an inner-city meth lab, Don's instinct leads to the arrest of a bystander who has a greater scheme planned.