novelization of Quentin Tarantino’s “Once Upon a Time…In Hollywood” is here, with some shocking revelations about its amiable, hippie-beating hero, Cliff Booth. Although the 2019 film shows the veteran stuntman — played by Brad Pitt in an Oscar-winning performance — casually exchanging blows with Bruce Lee and pounding the Manson Family to a pulp, many fans will be surprised to learn that not only has Cliff killed before, but many times.One of the lingering questions posed by the movie was what