Netflix has released the trailer for Circus of Books.Executive produced by Ryan Murphy, the documentary tells the history of "the center of the gay universe," as one patron termed it, an adult bookstore in Los Angeles called Circus of Books.Rachel Mason, the director of the film, interviewed her parents, Karen and Barry Mason, the straight owners of Circus of Books who sought to keep their business a secret from their children and friend circle — through more than three decades of being the