The final of the four Miss Marple film series starring the legendary Margaret Rutherford as a most unlikely Agatha Christie heroine – but who wants anyone else in the role?! This is only vaguely Christie, with a superficial reminder of one plot component in They Do It With Mirrors – a bunch of teenage tearaways supposedly being rehabilitated in an institution but actually being trained in burglary. Here they’re on a former naval ship run by a charitable trust. When one of her fellow trustees is murdered, Marple infiltrates the boat … and a whole slew of deaths follows! Great fun, with the usual gang – Charles ‘Bud’ Tingwell is back as Chief Inspector Craddock, Stringer Davies (Rutherford’s real life husband) returns as Marple’s fellow sleuth and there’s Lionel Jeffries in a highly amusing performance as Captain Rhumstone. Derek Nimmo, Miles Malleson and Nicholas Parsons bring up the considerable rear. Directed by George Pollock from a screenplay by David Pursall and Jack Seddon. Word up for the amazing poster design by Tom Jung and that fabulous jaunty signature tune by Ron Goodwin.