A quest to find the ancient sword Excalibur quickly turns into a hunt for a determined killer for Crispin Guest. London, 1396. A trip to the swordsmith shop for Crispin Guest, Tracker of London, and his apprentice Jack Tucker takes an unexpected turn when Crispin crosses paths with Carantok Teague, a Cornish treasure hunter. Carantok has a map he is convinced will lead him to the sword of Excalibur - a magnificent relic...