Murder in the Private Car
Plot: Ruth Raymond works on the telephone switchboard of a large NYC office building. One day, a private detective informs her that she is actually the daughter of railroad tycoon Luke Carson, and that she had been kidnapped as a baby 14 years ago by Luke's vindictive brother Elwood, and placed with strangers

Charles Ruggles
Una Merkel
Mary Carlisle
Russell Hardie
Porter Hall
Willard Robertson
Berton Churchill
Clifford Thompson
Fred 'Snowflake' Toones
Walter Brennan
Ray Corrigan
Sterling Holloway
Olaf Hytten
Harry Beaumont
Edgar Allan Woolf
Cedric Gibbons