An apartment bathroom is covered in blood with no body in sight.

Karow searches for the killer of his former partner.

A group of high school girls close ranks over a hit-and-run.

Karow is held hostage after his key witness gets gunned down in front of him.

A teacher accused of sexually harassing a student is found torched in his garden.

A mentally-ill locksmith thinks he's receiving messages directing him to procure victims.

A package with a severed finger leads Rubin and Karow to an art film eerily paralleling their investigation.

Rubin and Karow investigate a jogger attacked by a boar and a man murdered in a coffee kiosk.

Nina's son Tolja joins the police as an intern and gets shot on a routine call.

Robert discovers he's been living next door to a decaying corpse.

A secret society of law students exercise strange control over a new member.

The murder of a 90-year-old Berlin building tycoon appears to be politically motivated.

A realtor is murdered during evictions of an apartment building slated for remodel.

Karow and Rubin investigate the brutal death of a woman active in Berlin's night life.