Founded by a small band of religious freedom seekers in 1639, Newport, Rhode Island, subsequently became a bustling colonial seaport teeming with artists, sailors, prosperous merchants and, perhaps most distinctively, the ultra-rich families of the Gilded Age. Clinging to the lavish coattails of these newly minted millionaires and robber barons was a stream of con artists and hangers-on who attempted to leech off their well-to-do neighbors. From the Vanderbilts to the Dukes, the Astors to the Kennedys, the City by the Sea has served as a sanctuary for the elite, and a hotbed of corruption....