Mother, father and child in the kitchen. They've run out of sugar and the child is sent over to grandma to get some. The child takes its every day route down the garden, over the fence, it crosses the street, gets the sugar and...

Erika is mentally bruised and starts group therapy with people seeking absolute anonymity.

A young gang member is found dead, and the Beck group's investigation indicates that a drug network is behind it. Klas Fredén has been monitoring the network for a long time, and the Beck group - led by Alex Beijer - is most graciously allowed to work with the murder investigation in parallel. She will soon end up on a collision course with Fredén. Thus, Martin Beck, who is now head of department, is also involved in the case.

A boy finds a dead woman. When police move the corpse they find the skeletons of two women who disappeared in the seventies.

A blackout leaves the distinguished halls of the Löwanderska Hospital in complete darkness. Doctor Sverker Löwander hears the alarm when one of the ventilators go off, and rushes to the intensive care unit only to find the nurse in charge dead in the stairwell and the other disappeared without a trace. When DI Irene Huss arrives, the only witness claims to have seen Nurse Tekla doing her rounds. There's only one slight problem: Nurse Tekla committed suicide at the hospital sixty years ago.