Margaret Rutherford as Miss Jane Marple

Arthur Kennedy as Paul Quimper

Muriel Pavlow as Emma Ackenthorpe

James Robertson Justice as Luther Ackenthorpe

Thorley Walters as Cedric Ackenthorpe

Charles Tingwell as Inspector Craddock

Conrad Phillips as Harold Ackenthorpe

Ronald Howard as Brian Eastley

Joan Hickson as Mrs. Kidder

Stringer Davis as Jim Stringer

Ronnie Raymond as Alexander Eastley

Gerald Cross as Albert Ackenthorpe

Michael Golden as Hillman

Richard Briers as 'Mrs Binster'

Lucy Griffiths as Lucy

Peter Butterworth as Ticket Collector

Barbara Leake as Helen Stainton

Gordon Harris as Bacon

Nadia Pavlova as Murder Victim (uncredited)