A murder is committed on a Nile steamer, but Hercule Poirot is on board...
Trying to find how a millionaire wound up with a phony diamond brings Hercule Poirot to an exclusive island resort frequented by the rich and famous. When a murder is committed, everyone has an alibi.
An American movie actress, best known for playing dumb blondes, is Scotland Yard's prime suspect when her husband, Lord Edgware, is murdered. The great detective, Hercule Poirot, digs deeper into the case.
During a murder hunt game at a country house, to which Hercule Poirot is invited as an "expert", a real murder occurs.
In Acapulco, Hercule Poirot attends a dinner party in which one of the guests clutches his throat and suddenly dies. The causes seem to be natural until another party with most of the same guests produces another corpse.
Emily Boynton, step-mother to the three Boynton children and mother to Ginevra, blackmails the family lawyer, Jefferson Cope, into destroying a second will of her late husband which would have freed the children from her dominating influence. She takes herself and the children on holiday to Europe and the Holy Land. In Jerusalem, Hercule Poirot meets up with a woman friend, Dr. King who falls in love with Raymond Boynton to Emily's disapproval. Lady Westholme, her secretary and Cope are following them too. The children discover about the second will and Emily succeeds in rubbing the rest up the wrong way causing much hatred towards her. At a dig, everybody wonders about the camp and Emily is found dead... poisoned. Poirot investigates...