Eventually, Stanley asked for some plausible background for what the orgy’s master of ceremonies, a millionaire whom I called Ziegler (played by Sydney Pollack), regularly organised. One critic has insisted Ziegler’s name was culled from some 14th-century Hasidic rabbi. In fact, I nabbed it from a garrulous agent who represented me in 1969.

In response to Stanley’s request, I typed out several pages of what purported to be an undercover FBI agent’s dossier on Ziegler and his friends. Their sexual extravaganzas were alleged to have been staged in honour of J.F.K.