A dead woman is fished up from the ocean; her name and origins are unknown. Forensics show that she had been tied up before being thrown alive into the sea. Her body is covered with hematomas, making it likely that she had been abused before her death. Searching for her identity, Clüver, Feldmann and Ina find out where the woman had spent the night, and whom she had shared it with: her friend Diana. But when Ina tries to interrogate her, Diana strikes her, takes her pistol, and escapes. Meanwhile the police have identified the victim as Claudia Gollnik.
