The lawyer Philippe Sands weaves together a story of historical crimes, impunity and the law in his latest book, 38 Londres Street. He uncovers the links between a Nazi hiding in plain sight in Patagonia and the military dictatorship of Augusto Pinochet, and the failed attempts to bring either to justice.

Kenneth Roth has led Human Rights Watch for the last three decades, overseeing investigations into violence and oppression in countries all over the world. In Righting Wrongs he tells the stories of the wins and the losses, and the ongoing fight to uncover, and prosecute, abuses.

The BBC’s former Syria correspondent Lina Sinjab was forced into exile more than a decade ago after threats from President Bashar al-Assad’s government. She could only watch as death and destruction ripped through her country, and those in power appeared to act with impunity. She looks at how Syria is faring since the fall of al-Assad’s brutal regime.

Producer: Katy Hickman