Agatha Christie. Assassinio allo specchio

An old friend asks elderly sleuth Miss Marple to root out her stepson's killer, who she suspects is also out to get her grand ancestral home - but the plot begins to thicken when it emerges the deceased had a host of enemies.

An efficient version of Dame Christie's They do it with mirrors, that follows the literary source in general fashion - it keeps one interested, though it just gets better after the murder in the room with the gunshot going off.

Helen Hayes is excellent as Miss Marple, and unfortunately it's her final film. Bette Davis, who was clearly ill, made three more films before the curtain came down on her illustrious career. The rest of cast, especially Leo Mckern is fine. Entertaining enough mystery.