Terror by Night

Holmes and Watson board a passenger train bound from London to Edinburgh, to guard the Star of Rhodesia, an enormous diamond worth a fortune belonging to an elderly woman of wealth; but within the first hour of the trip, the woman's son is murdered and the diamond stolen and any of the passengers in their car could be the killer thief.

• 
  Roy William Neill
• 
  Melville Shyer

• 
  Basil Rathbone
  Sherlock Holmes
• 
  Nigel Bruce
  Dr. John H. Watson
• 
  Alan Mowbray
  Major Duncan-Bleek
• 
  Dennis Hoey
  Inspector Lestrade
• 
  Renée Godfrey
  Vivian Vedder
• 
  Frederick Worlock
  Prof. William Kilbane
• 
  Mary Forbes
  Lady Margaret Carstairs
• 
  Skelton Knaggs
  Sands - Moran's Accomplice
• 
  Billy Bevan
  Conductor Taking Tickets
• 
  Geoffrey Steele
  Roland Carstairs
• 
  Janet Murdoch
  Mrs. Shallcross (uncredited)
• 
  Gerald Hamer
  Alf Shallcross (uncredited)
• 
  Leyland Hodgson
  Senior Conductor (uncredited)
• 
  Harry Cording
  Mock the Undertaker (uncredited)
• 
  Charles Knight
  Baggage Car Guard (uncredited)
• 
  Boyd Davis
  "Inspector MacDonald" (uncredited)
• 
  Bobby Wissler
  Mock Jr. (uncredited)
• 
  Gilbert Allen
  Dining Car Steward (uncredited)
• 
  C. Aubrey Smith
  Elderly gentleman on train station (uncredited)