The chair of the Malmo city council is found dead right on the Danish-Swedish border on the Øresund bridge between Copenhagen and Malmo - the corpse cut in half at the waistline. Detective Saga Norén of Malmo CID is applied to the case and soon learns that the lower half of the corpse belongs to a yet unknown Danish woman. She is forced to team up with her Danish colleague Martin Rohde, who is slightly irritated by her unusual manners. At the same time, Göran Söringer is brought to Copenhagen's Rigshospitalet to receive a heart transplant.

Knowing the killer has carefully planned his crimes, Saga and Martin wonder whether they can catch him off guard by doing something he doesn't expect.

The murderer has groomed a number of schizophrenics to commit carefully synchronized violent crimes on the same day in Malmo and Copenhagen.