Quick recap
Superintendent Spence arrested James Bentley for killing Mrs McGinty, a charwoman in Broadhinny, and Bentley is due to hang. But Spence isn't convinced and asks Poirot for help. The detective lodges at a dreadful guesthouse in the village and learns McGinty had clipped a newspaper piece about four women tied to famous old crimes, with old photos. She had recognized someone. Ariadne Oliver is in town working on a play with young writer Robin Upward. Another person dies. Poirot reveals the killer is Robin, the hidden son of one of the women in the article. Bentley goes free, with a chance to start over.

