former BBC colleague, Tom Mangold, in 1976. The book is on the disappearance and presumed execution of Nicholas II, last Tsar of Russia, and his family. In the UK, The Sunday Times said it "demolished the massacre story beyond recovery. There is not a dull page in this book." In the U.S.A., the Los Angeles Times called it "a compelling and impressive work", Cosmopolitan deemed it "sensational...a masterful work of great suspense, meticulously researched". In a comparison that must surely have pleased the authors, The Toronto Sun rated the book's "superlative investigative reporting that makes Woodward and Bernstein seem like beginners." Conspiracy (1980), since updated as Not in Your Lifetime (1998 and 2013) In the late 1970s Summers was working on a documentary for Panorama about the recently released report from the United States House Select Committee on Assassinations. Interviews for that program served as the impetus for Summers' 1980 book on the assassination of President John F. Kennedy, Conspiracy . Conspiracy was later updated as Not in Your Lifetime: The Defining Book on the JFK Assassination. In the most recent, 2013, edition, Summers was first to report the alleged confession of a Cuban sharpshooter, Herminio Diaz Garcia, to have taken part in the assassination. The book won the Crime Writers' Association's Gold Dagger for Non-Fiction in 1980. The New York Times described Conspiracy as "important...serves to dramatize, as no previous book has done, the superficiality of the Warren Commission's investigation." The Boston Globe described Conspiracy as "the closest thing we have that literary chimera, a definitive work on the events in Dallas." In the UK, The Daily Telegraph described Summers' approach as "dismissing the more fevered theories while casting doubt on the Warren Commission". Author and journalist Burton Hersh described Conspiracy as "bedrock to the literature". Goddess, the Secret Lives of Marilyn Monroe (1985) The Boston Globes reviewer described Summers' biography of Marilyn Monroe as "mesmerizing, disturbing...reads like something out of a Robert Ludlum thriller." The New York Times Christopher Lehmann Haupt wrote that the book made for "extraordinary reading...the ghost of Marilyn Monroe cries out in these pages." Lehmann-Haupt wrote that one of Summers's most sensational conclusions was that Robert F. Kennedy was involved with Monroe's death and that at some point he removed evidence that she was sexually involved with him and his brother from the scene. About these conclusions, Lehmann-Haupt wrote "[I]t’s possible that the exposure