A U.S. Marine, Capt. David Berman travels to Paris to hunt down a Nazi war criminal who killed his father and crippled his mother. While visiting Krugman at the L'eau de Deu mineral spa, an unknown assassin kills Krugman with what turns out to be Berman's own 9mm service weapon. Bergman is charged with the crime and Court Marshall. Perry an old friend of Helene Berman agrees to defend her son along with the able assistance of the French Sûreté.