A private detective helps a prostitute being assaulted, and notices that she is wearing a very unique ring. She is later found murdered and there is no trace of the ring, which turns out to be part of a cache of jewelry stolen by the Nazis during World War II and smuggled out of France after the wary by an American army colonel. The private eye decides to try to find the ring, is hired by the former colonel to find the rest of the jewels, and runs up against a murderous French gang that is also looking for the jewels. 　　译文(2): 一个私家侦探帮助一个妓女被侵犯，并注意到她戴着一个非常独特的戒指。后来发现她被谋杀了，戒指也不见了踪影，原来是二战期间被纳粹偷走的一批珠宝的一部分，在一名美国陆军上校提防之后被偷运出法国。私家侦探决定试图找到戒指，被前上校雇来寻找剩余的珠宝，并与一个同样在寻找珠宝的凶残的法国帮派对抗。