A series of violent murders paralyze Stockholm. Private investigator Fredrika Bergman and her colleagues seek out to solve these crimes, but soon their existence is put under threat.

Suddenly alone during the late stages of her pregnancy, Sara receives an unexpected lifeline when Linda, her estranged older sister, arrives.

Parents wait all their lives for their children to say “Thank you!” And the children in turn wait for a “Sorry!”. This impossible equation is the starting point in the…