Dr. Langhoff MD bled to death in her office from ahead wound against a table, her phone was disabled to prevent her seeking help. Reuter lost her, a young lover, to Dieter Langhoff, who divorced her and is in bitter strife for the beloved dog. Langhoffs practice assistant points at one bitterly disgruntled patient: tranquilizer-dependent architect Peter Grabowski, who has a criminal record for violence.