"The Claydon Treasure Mystery" stars reliable John Stuart as an engineer (Peter Kerrigan) interested in solving mysteries, who becomes involved in investigating murders at Marsh Manor, home of the wealthy Claydon family. Plenty of suspects to choose from, Kerrigan believes that the murders may be connected to hidden treasure on the estate.
This film was mainly shot in the Japanese skiing resort Hokkaido in 1937-38 and was intended to create support for the coming winter olympics of 1940 in Japan which however were cancelled because of the Japanese-Chinese war.
Herr Werther, a new magistrate to the Grand Duchy of Walheim who is a violinist and poet, seems to have fate on his side as he meets and pursues a beautiful local woman, Charlotte.
In the village of Sableuse, the local manor has been bought out by a nouveau riche, Emile Cousinet. When his wife Lisette, a former music hall actress, flees to Paris with young Pierre de Sableuse, Cousinet asks Father Pellegrin, the village vicar, to bring the lost sheep back home.