Kommissar Marthaler - Engel des Todes

In a cold-blooded attack on an art transport Tereza, the pregnant girlfriend of Commissioner Robert Marthaler, is mortally wounded. Since Marthaler is thus affected by the incident himself, his boss Herrmann denied him the appropriate investigation. However, Marthaler does not let it stop him and continues to investigate on his own. He soon finds out that there seems to be a connection between the current assault and an unexplained prostitute murder more than 30 years ago.