Margaret Holt and her brother Victor set out to smash a narcotics ring responsible for their father's death. Young reporter John Howell and eccentric mystery writer Winthrop Clavering help unravel the truth about the murder.
When 4 year old Amanda McCready disappears from her home and the police make little headway in solving the case, the girl's aunt, Beatrice McCready hires two private detectives, Patrick Kenzie and Angie Gennaro. The detectives freely admit that they have little experience with this type of case, but the family wants them for two reasons—they're not cops and they know the tough neighborhood in which they all live.
After his son is wrongly accused of kidnapping, a deacon who has just lost his wife takes matters into his own hands and fights a crooked police gang to clear him.
Actress Jane Wilkinson wants a divorce, but her husband, Lord Edgware, refuses. She convinces Hercule Poirot to use his famed tact and logic to make her case. Lord Edgware turns up murdered, a well-placed knife wound at the base of his neck. It will take the precise Poirot to sort out the lies from the alibis - and find the criminal before another victim dies.