During an annual board of trustees meeting, one of the trustees dies. Miss Marple thinks he’s been poisoned after finding a chemical on him. She sets off to investigate at the ship where he had just come from. The fourth and final film from the Miss Marple series starring Margaret Rutherford as the quirky amateur detective.

Margaret Rutherford
as Miss Jane Marple

Lionel Jeffries
as Captain Rhumstone

Stringer Davis
as Jim Stringer

Charles Tingwell
as Inspector Craddock

William Mervyn
as Breeze-Connington

Henry Oscar
as Lord Rudkin

Joan Benham
as Alice Fanbraid

Nicholas Parsons
as Dr. Crump

Miles Malleson
as Bishop

Derek Nimmo
as Sub-Lt. Eric Humbert
CinemaSerf
In my view, this is the weaker of the four "Miss Marple" films made by George Pollock for MGM. Margaret Rutherford is flawless as the trustee of a charity charged with the rehabilitation of young offenders and Lionel Jeffries provides the laughs as the Captain of "HMS Battledore" - the sailing sloop...