Elinor has been accused of murder. Young Mary Gerrard was poisoned with morphine, and Elinor was the only one who had access to the sandwiches that Mary ate. Only Hercule Poirot can sift through the evidence and find the truth. There are various suspects: Elinor's ex-fiancée who was fascinated with the dead girl, the doctor who attended Mary's last moments, and two nurses who love to gossip. Who had the motive to kill an innocent young woman just turned twenty-one?
