After the Benckers go to bed, Louis attempts to steal their Mercedes-Benz 300 SL. Bencker catches Louis and threatens him with what appears to be a gun, though it is really a cigar tube. Louis shoots and kills the couple with Julien's handgun. He and Véronique return to Paris and hide in her flat. Convinced that the crime will be traced to them, Véronique persuades Louis to join her in a suicide pact. They take an overdose of pills and pass out.