S4·E13 Trackdown

A parking attendant's suspicion leads to the discovery of a woman's body in the trunk of a car, sending Hooker and the team on the trail of a psychotic killer who is on a cross-country murder spree. Meanwhile, the deranged killer lures a young woman into his clutches and takes her hostage, leaving behind her husband and sick baby. Hooker persuades the Detective in charge of the case to let him place a trap to try and catch the killer and get the woman back safely, but it places Stacy in great danger.