The investigation of a missing girl is linked to a past case.
When a young woman is reported missing, the officers of 15 Division soon discover a possible copycat connection to one of their division's most distressing cases. With the clock ticking, Gail must face her worst fears in order to track down the missing girl.
When the investigation of a missing girl is linked to a convicted murderer who has had a past with 15 Division, it's all hands on deck. Detective Luke Callaghan comes in to help bring the copycat abductor to justice and get the missing girl home safe. While most of the officers are out looking for witnesses, Luke and Chris discover that the imprisoned convict himself may prove to be a useful ally in the investigation.
After the officers of 15 Division are forced to release a suspected predator, the grim discovery of the body of a missing girl reopens an unsolved case - bringing back Detective Luke Callaghan in from the Homicide Squad to oversee it. But when they learn that Andy has been assaulted, and Gail Peck has been violently abducted following the call-girl sting, it's a race against time as the officers of 15 Division work frantically to recover one of their own.
The same night the officers of 15 Division are forced to release a suspected predator for lack of evidence, Andy and Gail are violently assaulted in Andy's loft - and Gail is abducted. Detective Luke Callaghan is brought in to oversee the case that very well may be the work of a serial murderer. Working frantically to track down Gail's abductor before it's too late, the officers rally - and zero in on their prime suspect.