Neither a random event nor the act of a lone madman - the assassination of President John F Kennedy was an appalling and grisly conspiracy. Informed by original sources, this title adds fresh material to different aspects of the case.

Explains why a philo-Semitic association was dissolved even as anti-Semitism was condemned, how the Vatican concluded a concordat with the Third Reich in 1933, why Hitler's "Mein Kampf" was never proscribed by the Church, and what factors surrounded the Pope's silence on the persecution of the Jews.

The man whose name is shorthand for all that is ugly in politics was more nuanced than his reputation suggests. Christopher Celenza's portrait of Machiavelli removes the varnish to reveal not just the hardnosed philosopher but the skilled diplomat, learned commentator on ancient history, comic playwright, tireless letter writer, and thwarted lover.

This, the most interesting and helpful edition of Charles Darwin's major work, is now available in an inexpensive paperback edition. It is written with a clarity, forcefulness, and conciseness not found in any subsequent revision. For modern reading and for reference, it is the standard edition.

Bobby Kennedy wasn't the most visible figure in the civil rights movement, but his impact was transformative. As attorney general, he protected the Freedom Riders and turned the Justice Department from an enemy of civil rights into an enforcer of antiracist policies. Patricia Sullivan gives Kennedy his rightful place as a force for racial justice.

Peter Brown explores a revolutionary shift in thinking about the fate of the soul between 250 and 650 CE, showing how personal wealth in the pursuit of redemption led Church doctrine concerning the afterlife to evolve from speculation to firm reality. This new relationship to money set the stage for the Church's domination of medieval society.

Thomas Piketty's Capital in the Twenty-First Century showed that capitalism, left to itself, generates deepening inequality. In this audacious follow-up, he challenges us to revolutionize how we think about ideology and history, exposing the ideas that have sustained inequality since premodern times and outlining a fairer economic system.