The authors express an acute understanding that people have always lived in a stew of history, and they situate each of their subjects not just within the ideas and attitudes of their day, but within the legal and religious constraints that defined them as outcasts and abominations. Still, they never forget that they’re talking about conquerors and colonialists, racists and antisemites, criminals and conspirators, from Hadrian to Ronnie Kray to Roy Cohn.