A Nazi or a KGB agent? Linda Kinstler's search for her grandfather

Journalist Linda Kinstler grew up not knowing much about her Latvian grandfather, other than he'd disappeared after World War Two. It was only later, as an adult, that she learned her paternal grandfather, Boris Kinstler, had been a Nazi collaborator and member of the SS in Latvia. After the war, he became a KGB agent, and then vanished. In search of answers about her grandfather, Linda Kinstler uncovers his links to a man called Herbert Cukurs, known as the "Butcher of Riga", implicated in the murder of 30,000 Jews in Latvia. In researching her book, Come to This Court and Cry: How the Holocaust Ends, she unravels a tale of revisionism, ultra-nationalism and denialism - issues that are just as timely as ever.