After Miss Jane Marple is made a trustee of a merchant marine training vessel, a fellow trustee is poisoned, and ship's officers are later murdered after she comes on board.
Director: George Pollock
Cast:Margaret Rutherford , Lionel Jeffries , Charles 'Bud' Tingwell , William Mervyn , Joan Benham , Stringer Davis , Nicholas Parsons , Miles Malleson , Henry Oscar , Derek Nimmo , Gerald Cross , Norma Foster , Terence Edmond , Francis Matthews , Lucy Griffiths , Bernard Adams , Tony Quinn , Edna Petrie