Convinced that her suspect did not act alone, Kwon Joo considers her next move, and how best to rein in the unpredictable detective Kang Woo.

A recently released sexual predator is accused of a kidnapping. As Kang Woo heads to the scene, he runs into the man he believes is haunting him.

While in custody, a suspect dies of an apparent heart attack. Later, Kang Woo receives a message from the real and elusive mastermind.