Synopsis by Mark Deming
In this crime programer, Arsene Lupin (Charles Korvin) is an expert jewel thief from France who, while aboard a train, notices that Stacie (Ella Raines), a beautiful woman from England, is travelling with a large and valuable emerald. Lupin steals the gem, but he becomes so infatuated with Stacie that he reroutes himself to Great Britain in order to return it to her. However, while in the process of doing so, he discovers that her cousin Bessie (Gale Sondergaard) is planning to murder Stacie in order to claim her inheritance. Lupin is determined to intervene to save Stacie's life, but doing so puts him at risk of being captured by Ganimard (J. Carrol Naish).
capture, cousin, damsel-in-distress, France, girl, inheritance, jewel-robbery, killing, love, naivete, opal, pursuit, relative, robbery, train [locomotive]