Tony Randall character Hercule Poirot
Anita Ekberg character Amanda Beatrice Cross
Robert Morley character Hastings
Maurice Denham character Japp
Guy Rolfe character Duncan Doncaster
Sheila Allen character Lady Diane
James Villiers character Franklin
Julian Glover character Don Fortune
Grazina Frame character Betty Barnad
Clive Morton character Mister K
Cyril Luckham character Sir Carmichael Clarke
Richard Wattis character Wolf
David Lodge character Sergeant
Patrick Newell character Cracknell
Austin Trevor character Judson
Alison Seebohm character Miss Sparks
Windsor Davies character Dragbot
Sheila Reid character Mrs. Fortune
Drewe Henley character Bowling Alley Attendant (uncredited)
Margaret Rutherford character Miss Jane Marple (uncredited)
Sally Douglas character Glamorous Girl in Gaming Club (uncredited)
Stringer Davis character Mr. Stringer (uncredited)
