Two girls from different backgrounds, one an immigrant from Turkey and the other a girl who needs to get out of her father's shadow, apply to the police academy, where they become close friends.
Two young girls are killed on railway by a passing train. It does not seem to fit the profile of a normal suicide. So if this is a double homicide who would do this and why? Martin Beck and his team start following the step backwards in order to figure out what has happened. With good and intensive police work they find man side trails from the main path.
A town in south of Sweden is isolated after a viral outbreak. The Swedes and immigrants still inside must band together to survive the onslaught.
