The shifting tide

William Monk knows London's streets like the back of his hand; after all, they are where he earns his living. But the river Thames and its teeming docks-- where towering schooners and clipper ships unload their fabulous cargoes and wharf rats and night plunderers ply their trades--is unknown territory. Only dire need persuades him to accept an assignment from shipping magnate Clement Louvain to investigate the theft of a cargo of African ivory from Louvain's recently docked schooner, the Maude I...