Starfist
Book 6: Hangfire

Six agents have died hideously trying to penetrate the crime families behind a vast empire of pleasure and debauchery - Now it's up to the Marines to break the circle. Most people will visit Havanagas only in their dreams, for few can afford the exclusive resort planet that recreates ancient worlds and caters to every taste. Witches are burned at the stake in medieval towns while riotous hordes fill Rome's Coliseum to watch gladiators battle. Even the basest of human lusts are satiated by deadly sex acts and a thriving slave trade.