Jane Marple (Joan Hickson) may not be the youngest of them all, but in the 1930s she solves the most baffling criminal cases, regularly outshining professional detectives in the process.
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.
When Miss Marple is invited to the manor house of an old friend, it is not long before a puzzling murder puts her mind to work.
At a reception for a fading film star making a screen comeback, a gushing, pushy fan is poisoned by a drink apparently meant for the actress.