Secrets of Monte Carlo

Secrets of Monte Carlo is a 1951 American crime film directed by George Blair and starring Warren Douglas, Lois Hall and June Vincent.

TV Guide called the film a competent programmer. while Allmovie noted, though inexpensively produced, Secrets of Monte Carlo is an effective suspenser, with Republics back lot standing in admirably as Southern Europe. Another plus a formidable array of villains, headed by the glamorous June Vincent.

Source: Wikipedia