Sofie is on a class trip with the drama group, and Elin is with. Jonas worries about Adam. He suspiciously resembles a phantom drawing of Posemannen, a sex offender and pedophile who went free. At the same time, Jonas is visited by Kripos investigator Marius Borge.

The lock festival is underway, and without Adam as director, Elin must help the drama group with the play. Elin's unrest creates conflict between her and Sofie. Jonas and William, for their part, have launched a plan to get rid of Kripos - and Adam - for good.