In fact, Circus of Books was a purveyor of hardcore porn and a center of gay life in West Hollywood, Calif., until the internet swept it away. But there also were the racks of VHS tapes, and later DVDs, as well as displays of sex accessories. Which it was, among other things, with its stock of books and magazines-the New York Review of Books never sold very well, although Hustler flew off the shelves. ‘Circus of Books,” a fascinating documentary newly on Netflix, chronicles the rise and fall of a family business that was a mystery to the three children in the family it sustained-as schoolkids they thought it was just a local bookstore.