The Investigation

A home-built submarine with a female Swedish journalist and the submarine builder on board disappears.

The journalist's parents assist the police in their investigation; the case suddenly takes a violent turn.

Navy divers search the seabed; Jens Møller gets a radical idea that can help the investigation.

Swedish dogs that can detect corpses below sea level are brought in, but even though the dogs mark fairly accurately, the divers find nothing.

The case comes together, but Jens Møller and his team still have no conclusive evidence; prosecutor Jakob Buch-Jepsen emphasizes that they must have the motive and cause of death.

Prosecutor Jakob Buch-Jepsen makes it clear to Jens Møller that more solid evidence is needed, otherwise they risk the accused going free.