25 May

Nine-year-old Christine Klein is killed in her family's inn at Mülheim; the crime goes unsolved for seventeen years.

Peter Kürten Executed

For fifteen months Düsseldorf hunted a killer it could not see. The break came from a survivor's letter, misaddressed and opened at the post office.

Petiot is guillotined in the courtyard of La Santé prison.

Marcel Petiot Executed

In occupied Paris a doctor sold a secret route to safety for 25,000 francs a head. In March 1944 smoke from his chimney showed where his clients had gone.