Not many men emerge from Trafalgar with not an ounce of credit to their names, but through an overreliance on rum and his habitual bad luck, Lieutenant Martin Jerrold manages it. In February 1806, he comes to Dover with one final chance to redeem his reputation. Before he has been there a day, however, he finds himself standing over a body that is too far from the cliffs to have fallen accidentally. To his horror, Jerrold is suspected of murder. His...