PETER FIRSTBROOK is author of The Voyage of Matthew (about the explorer John Cabot), Lost on Everest (about George Mallory), and The Obamas: The Untold Story of an African Family. For twenty-five years, he worked for the BBC as a television producer, director and executive producer specializing in historical documentaries. He has won over thirty international awards, including the Royal Television Society award for best documentary, twice. He lives in Ealing, West London.