FBI agent Charles Barker applies controversial techniques in his attempts to bring criminals to justice, which often border on illegal and unsettle his uninitiated partner, Ellis Dove. Over the course of the first season, Barker is investigated by fellow FBI agents for alleged misconduct. Dove's loyalty to his partner is challenged when internal affairs agent Ray Beaumont (Larry Gilliard) approaches him to gain information. Shortly thereafter, Dove learns of darker secrets in Barker's past.