Crooked lawmen, political strivers, grafters and gamblers, low dives and criminal hijinks–Satan’s Circus (Three Rivers Press $15.95) has those attractions and more, all centered around the tale of the only police officer in U.S. history to be executed for murder. British writer Mike Dash’s record of the rise and fall of Charley Becker, a handsome, German-descended New York City cop, is a colorful, captivating lesson in dishonor among thieves. Despite being trusted by his superiors and given responsibility for taming vice in early 1900s Manhattan, Becker was living a double life as the head of a widespread extortion racket. He thought himself invulnerable. But the murder of a casino owner who’d threatened to expose Becker made this decorated cop a target of ambitious journalists and prosecutors. Turned on by fellow brigands, and despite his wife’s efforts to clear him of wrongdoing, Becker wound up paying with his life for Gotham’s rank corruption. ~ Jeff Pierce