Jeffrey Epstein regularly boasted he could blackmail a powerful network of men using videos showing them abusing young women, according to Virginia Giuffre. The bombshell claim is made in her posthumous memoir Nobody’s Girl, A Memoir of Surviving Abuse and Fighting for Justice. The Telegraph has obtained a copy of the 367-page book which will be published next week by Alfred A. Knopf. It will reignite questions about whether the late paedophile maintained a “client list” after the federal authorities concluded in July that there was no blackmail operation. Giuffre finished writing the book six months before she took her...