After an unpleasant encounter with a wheedling busybody, Ariadne Oliver asks Poirot to delve into the past and solve the riddle of the murder-suicide of the Ravenscrofts, the parents of her goddaughter Celia. Ever since they were found dead, no one has been able to ascertain precisely who killed whom. As Poirot is already preoccupied with the investigation of a psychiatrist's murder, Ariadne sets out herself to question people familiar with the Ravenscrofts in the hopes that they will remember key clues to the solution, for at stake is Celia's future happiness and the memory of a loving couple whose mysterious demise shocked and baffled everyone they knew.moreless
It's time for deep thoughts of mortality in the house when JP finds out his father has serious health issues, Oregon learns horse is dying, and Vod overdoses. Meanwhile, Kingsley uses Vod's situation to become a student journalist and Josie gets engaged.moreless
Childminder Carolyn Norwood arrives at the home of 14-month-old Vicki Warwick to discover that the baby's mother Susan has been attacked and baby Vicki has been taken. Jane Tennison has just been discharged from hospital having terminated her pregnancy. She has now been promoted to superintendent. When Susan starts to recover she tells Jane that she has seen a strange man with two little girls watching her and her baby in the park. The description fits that of paedophile Chris Hughes, who has recently come out of prison. Could he be Jane's prime suspect?moreless
Spinster Edith Presbury asks Holmes to investigate when she is frightened by a large hulking figure silhouetted in her bedroom window - a presence which causes her dog to howl. Holmes is convinced the prowler is something out of the ordinary, but Watson at first finds the case trivial.