 Margaret RutherfordMiss Jane Marple | Miss Jane Marple |
 Stringer DavisJim Stringer | Jim Stringer |
 Robert MorleyHector Enderby | Hector Enderby |
 Flora RobsonMiss Milchrest | Miss Milchrest |
 Charles TingwellInspector Craddock | Inspector Craddock |
 Gordon HarrisSergeant Bacon | Sergeant Bacon |
 Robert UrquhartGeorge Crossfield | George Crossfield |
 Katya DouglasRosamund Shane | Rosamund Shane |
 James VilliersMichael Shane | Michael Shane |
 Noel HowlettMr. Trundell | Mr. Trundell |
 Finlay CurrieOld Enderby | Old Enderby |
 Duncan LamontHillman | Hillman |
 Kevin StoneyDr. Markwell | Dr. Markwell |
 Frank AtkinsonHotel Night Porter (uncredited) | Hotel Night Porter (uncredited) |
 Roger AvonPolice Photographer (uncredited) | Police Photographer (uncredited) |
 Fred GriffithsLandlord (uncredited) | Landlord (uncredited) |
 Wallace BoscoHotel Night Porter (uncredited) | Hotel Night Porter (uncredited) |
| TTony CastletonHotel Guest (uncredited) | Hotel Guest (uncredited) |
| JJack DearloveParty Guest (uncredited) | Party Guest (uncredited) |
| CCharles GilliardHotel Guest (uncredited) | Hotel Guest (uncredited) |
 George HoldcroftHotel Guest (uncredited) | Hotel Guest (uncredited) |
 Joan IngramGuest (uncredited) | Guest (uncredited) |
| PPat LewisHotel Guest (uncredited) | Hotel Guest (uncredited) |
| JJack MandevilleHotel Guest (uncredited) | Hotel Guest (uncredited) |
| JJohn MorrisHotel Guest (uncredited) | Hotel Guest (uncredited) |
| FFred PeckHotel Guest (uncredited) | Hotel Guest (uncredited) |
 Pat RyanParty Guest (uncredited) | Party Guest (uncredited) |
| PPaddy SmithParty Guest (uncredited) | Party Guest (uncredited) |
 Guy StandevenForensic Photographer (uncredited) | Forensic Photographer (uncredited) |
 Marianne StoneMiss Prentice (uncredited) | Miss Prentice (uncredited) |
