Summary Two boats are racing across Lake Constance early in the morning. One of the boats overlooks an unsuspecting swimmer. The emergency doctor can only confirm his death. There is no trace of the driver. While Paul is more concerned with Amira than his job, Julia is able to locate the boat that caused the accident. It belongs to Stefan Lang, a local politician. The boat had been reported stolen shortly before. The only strange thing is that its lock is undamaged. Suspicion soon falls on Noah, Lang's son, who lives with his divorced mother. During questioning, Noah denies the crime. But he can't fool his parents. They advise Noah - not entirely selflessly - to keep quiet... Meanwhile, Paul is pulling out all the stops to get Amira papers and a place to stay. He fears that she is going astray to secure her livelihood when he catches her at a photo shoot. But his wife Christina is on to him, catching the two in flagrante delicto on their boat. So Nele is amazed when she finds Paul sleeping in the police station cell in the morning. His wife has thrown him out. Then a blackmail letter turns up at Lang's house about the alleged cover-up of the accident. Lang deposits 75,000 euros on the lake using a buoy - and suddenly disappears... Now Jakob's presence of mind is needed.

• Crime