Margaret Rutherford as Miss Jane Marple

Stringer Davis as Jim Stringer

Robert Morley as Hector Enderby

Flora Robson as Miss Milchrest

Charles Tingwell as Inspector Craddock

Gordon Harris as Sergeant Bacon

Robert Urquhart as George Crossfield

Katya Douglas as Rosamund Shane

James Villiers as Michael Shane

Noel Howlett as Mr. Trundell

Finlay Currie as Old Enderby

Duncan Lamont as Hillman

Kevin Stoney as Dr. Markwell

Frank Atkinson as Hotel Night Porter (uncredited)

Roger Avon as Police Photographer (uncredited)

Fred Griffiths as Landlord (uncredited)