The film's original release title is Le mystère Saint-Val, and it was released in the United States in 1945 under the English title of St. Val's Mystery. It was then released in Denmark on 23 October 1950 as Det mystiske slot and in Portugal on 1 June 1954 as Fernandel, Polícia Amador.
Plot
An insurance-office clerk Désiré Le Sec (Fernandel) dreams of being a great detective. The clerk's uncle (Marcel Carpentier) is his boss at that agency, and sends Désiré out on a frivolous mission to Saint-Val Castle, where the master of places has been found dead through mysterious circumstances. Désiré uncovers a real life murder and becomes mixed up with the murder case, ending up spending a night in the forbidding and spooky old Saint-Val castle.
The film was a big hit in France, recording admissions of 2,397,153.[1]
James Travers of Film de France offered that the film appears to have borrowed its plot from Ten Little Indians but with a "decidedly unfunny comic twist".[4] When seen with the now-removed musical numbers it contained in its original release, the film "was probably more digestible".[4] Summarizing, Travers felt the gags were predictable, the plot "hackneyed and pedestrian", and the "unimaginative pay-off definitely does not reward" the viewer.,[4] concluding that this marked the film as "clearly not Fernandel's finest hour".[4]