With war in Europe looming large, "Charlie" (Sidney Toler) is in Paris to celebrate with some of his colleagues from the previous conflagration when he finds himself embroiled in the mysterious killing of "Petroff" (Douglass Dumbrille). There are few clues, but those that there are seem to centre around the young "Marie" (Lynn Bari) who is constantly having to beg, borrow or maybe even steal money to pay for an all-important passenger to travel to Panama and thence onto the safety of the USA. The deeper he delves, though, the more suspicious the activities of the deceased man start to look,…