1662. Cromwell is dead but Charles II presides over an uncertain court. Now, with rumour of treason brewing in the Scottish Isles, the king needs men he can trust ... Men like young Matthew Quinton, a loyal but inexperienced sea captain. Matthew's first command was lost at sea but this time he is determined to complete his mission. Vital to his success is Kit Farrell, a young mariner who has promised to help Matthew. In return, Matthew will teach Kit to read and write. And there is the surly Phineas Musk. Unpleasant he may be, but Musk will protect his master with his life. With their help, Matthew must tackle a resentful Cornish crew and the growing conviction that treason lies closer to home ...