Murder investigator Evert Bäckström is convinced that crimes have been committed when a women's cranium is found on an island in the archipelago. But his investigation is countered by the police chief and when the woman's identity is clarified, the entire investigation is turned upside down.

Kjell Bergqvist, Agnes Lindström Bolmgren, Filip Berg, Peshang Rad, Victoria Dyrstad, Pekka Strang, Małgorzata Pieczyńska, Rolf Lydahl, Elvis Stegmar