Francesca Recchia speaks to Adrian Levy, co-author of The Forever Prisoner: The Full and Searing Account of the CIA’s Most Controversial Covert Program. Based on four years of intensive reporting, on interviews with key protagonists who speak candidly for the first time, and on thousands of previously classified documents, The Forever Prisoner is a powerful chronicle of a shocking experiment that remains in the headlines twenty years after its inception, even as US government officials continue to thwart efforts to expose war crimes.