L'ultima rapina

A daring train robbery earns the gang led by the "Dutch" a decent nest egg. During the operation, the men escorting the money and a train conductor were killed. The investigations are entrusted to Nick and Marvin, for the murders, and to the FBI couple Bristow and Fergus, for the robbery. The almost perfect plan, however, did not take into due account the other passengers on the train: one of them, in fact, is able to recognize at least one of the murderers. A faint but decisive trace...