Quick recap
Miss Marple joins the board of a trust that has bought the Battledore, an old wooden warship, to reform young offenders. A trustee who has just visited the ship drops dead after taking poisoned snuff. Marple goes aboard to learn what he found, while Mr. Stringer investigates ashore. A lieutenant is killed with a sword and hanged from the mast, and the assistant matron is poisoned. Marple sets a trap and finds money stashed in a cannon. The killer is the first officer, Commander Breeze-Connington, who has been embezzling for years. They fight with swords, he disarms her, and Stringer knocks him out just in time. The captain is cleared and keeps his command.
No spoilersOpens once you mark the title as seen.