Season four of this procedural drama about the Missing Persons Squad, a unique New York based FBI task force, finds Martin gravely injured in the line of fire and going through rehabilitation. Jack, Samantha, and Danny try not to let their concern for Martin hinder their efforts. Vivian's heart surgery appears to have been a success. Rookie, Elena Delgado, formerly of the NYPD, has joined the squad after Jack realizes the crisis plagued team needs...

FBI agent Jack Malone and his dedicated team of The Missing Persons Unit are on the case. These investigators track down missing persons by using advanced profiling techniques. Victims include a self-help guru, a soldier home from war, a college coach, a billionaire's family and children on a hijacked school bus.

Black widow: Nancy Ordway is an aspiring writer hoping to make it big in New York at the expense of everyone around her, including Broadway producer Peter Denver, who reluctantly lets her use his apartment to work during the day. And when Peter's wife, Iris, comes home from a trip to find Nancy dead in the bathroom, the assigned detective, Lt. Bruce, soon realizes this assumed suicide is more likely a murder. Everyone Ordway knew is suddenly suspect...