Four women vanished between 1983 and 1985. Each case went cold. Then the photographs arrived.
Recovered from the River Falls Police Department archive, this case file contains victim profiles, witness interviews, suspect reports, crime scene photographs, and anonymous Polaroids mailed to investigators after each disappearance.
The original detectives believed the victims had no connection. They were wrong.
The victims appear unrelated. The crime scenes do not match. The suspects all explain part of the case. Only one explanation connects everything.
Identify the person responsible for all four disappearances.
Determine where the anonymous Polaroids were taken.
Explain how the killer approached victims without force.