Once again British author Ellis smoothly blends old and recent crimes in an archeological mystery featuring Det. Sergeant Wesley Peterson and his fellow Tradmouth (Devon) police officers. Detective Constable Rachel Tracey in particular makes a striking return from last year's The Funeral Boat. While clearing the overgrown site of the extensive 17th-century gardens of Earlsacre Hall during a restoration project, diggers find two skeletons, one belonging to a young woman buried alive three centuries earlier. Neil Watson, of the County Archeology Unit, calls Peterson, with whom he studied archeology at university, but Peterson is busy investigating a stabbing murder in a nearby caravan park. Skillfully combining identity theft and blackmail with murder, the author treats the reader to a host of distinctive supporting characters, including the owner of a discreet brothel, its girls and clients, a petty thief, a sex-driven "poetess in residence," a solicitor's litigious neighbor and Peterson's giddy and unconventional mother-in-law. The well-researched historical background (involving the enslavement in the West Indies of rebels against James II) and an unusual murder weapon (a "knocking-in mallet" used on cricket bats) add interest. Anglophiles will drink up the local color and south Devon towns modeled on Dartmouth and Torbay. (July 31)