The Solitaire Man

The Solitaire Man is a 1933 American PreCode drama film directed by Jack Conway, starring Herbert Marshall and Mary Boland.

The plane lands in Croydon and is boarded unexpectedly by police constables to detain the passengers for Scotland Yard. The French Army escort lands immediately behind them and turns out to be only a plane hired by Mrs. Hopkins husband Elmer to bring him to England after he missed the flight. When Wallace identifies himself as Inspector Wallace to the officers and tries to leave to file his report, Oliver insists that it is he who is the inspector and Wallace the Solitaire Man to prevent it. The passengers are interrogated by Inspector Harris, who knows Wallace acidly reminding the informant that he is not a detective and is the former partner of the murdered inspector. Oliver tricks Wallace into exposing himself as the jewel thief and the murderer. Wallace tries to escape out a window using the gun but is shot by Harris, who does not realize the gun is empty. Oliver then reveals that when he went to the cockpit, he used the planes radio to summon Scotland Yard to detain the arrivals. Harris accepts Mrs. Hopkins corroboration of Olivers explanation that he is only a legitimate jewelry dealer who offered to appraise the necklace when Wallace had tried to sell it to her on the plane. Oliver and Helen head off to start new lives as a quiet, happily married Devonshire couple.

Source: Wikipedia