While on vacation at a resort hotel in the West Indies, Miss Marple correctly suspects that the apparently natural death of a retired British major is actually the work of a murderer planning yet another killing.
| Actor | Role |
|---|---|
 Joan HicksonMiss Marple | Miss Marple |
 Donald PleasenceJason Rafiel | Jason Rafiel |
 Adrian LukisTim Kendal | Tim Kendal |
 Sophie WardMolly Kendal | Molly Kendal |
 T. P. McKennaDr. Grahame | Dr. Grahame |
 Michael FeastEdward Hillingdon | Edward Hillingdon |
 Sheila RuskinEvelyn Hillingdon | Evelyn Hillingdon |
 Frank MiddlemassMajor Palgrave | Major Palgrave |
 Robert SwannGreg Dyson | Greg Dyson |
 Sue LloydLucky Dyson | Lucky Dyson |
| BBarbara BarnesEsther Walters | Esther Walters |
 Stephen BentJackson | Jackson |
 Joseph MydellInspector Weston | Inspector Weston |
| VValerie BuchananVictoria | Victoria |
| IIsabelle LucasAunty Johnson | Aunty Johnson |
 Shaughan SeymourNapier | Napier |
| GGregory MunroePathologist | Pathologist |
 T.R. BowenRaymond West | Raymond West |
| JJames CurranPiers Musgrave | Piers Musgrave |