Murder in the Private Car

Murder in the Private Car is a 1934 American mystery romance film starring Mary Carlisle, Charles Ruggles and Una Merkel and directed by Harry Beaumont.

Set in Los Angeles, this is the story of switchboard operator Ruth Raymond Mary Carlisle. She learns from her lawyer Alden Murray Porter Hall, that she is actually the daughter of railroad tycoon Luke Carson Berton Churchill. She had been kidnapped as a baby by Lukes brother and partner Elwood and placed with strangers. Once it is found out that she is an heiress there is an attempt on her life by her bodyguard and chauffeur, which is foiled by Godfrey D. Scott Charles Ruggles.A message from her father is intercepted and replaced telling her to meet him in New York instead of Los Angeles. Ruth, Murray and her best friend Georgia Latham Una Merkel board the train bound for New York. The lights go out in Ruths car and an announcement is heard eight hours to live, after which Scott introduces himself to Ruth and her friends as a slueth who prevents crime. Scott reunites Ruth with her stowaway boyfriend John Blake played by Russell Hardie. Then the train is suddenly stopped by the wreck of a circus train on the tracks. ........

Source: Wikipedia