Back on the murder squad, Pat is asked to investigate when a young mother of two, Diane Leach, is abducted from a local wood. The confession of a local sex offender complicates matters, as Pat looks into the possibility that the father of a young protege of the woman may be responsible for her disappearance. Meanwhile, Walker has worries of his own, as his ex-wife Lynn is dating an abusive, unstable man, who turns into a manic-obsessive when she decides to leave him. (Part 1 of 2)