When Boston homicide detective jane Rizzoli and medical examiner Maura Isles are summoned to a crime scene, they find a killing worthy of the most ferocious jungle beast. But only the most sinister human hands could have left a renowned big-game hunter gruesomely display like the once-proud animals adorning his walls. After linking the crime to a series of unsolved murders across the country, Maura wonders if the solution might actually be found deep in Africa. Six years earlier, a group of tourists on safari were marooned in the bush. With no outside contact, and only an armed guide for protection, the terrified party hoped for rescue befor their worst instincts - or prowling wild animals - could tear them apart. But it was a human predator who walked away with their blood on his hands. Now the same killer ist stalking prey in Boston, and Rizzoli and Isles must lure him out of the shadows and into a cage - even if it means using the terrified lone survivor of the safari massacre as bait.