A hoax concocted in the late 19th century, the anti-Semitic text The Protocols of the Elders of Zion keeps circulating, and its resurgence after the 9/11 attacks prompted Marc Levin (Slam) to direct this engrossing digital documentary. Using a single camera and his father as soundman, Levin proves an intrepid investigator, quizzing a Palestinian publisher of the book in the U.S., a representative of the white supremacist National Alliance, the creator of the Web site Jew Watch, and Arabs outside a New York memorial for Hamas chief Sheikh Ahmed Yassin. (Hoping to pick apart the evidence for Jewish control of Hollywood, he phones Norman Lear, Larry David, and Rob Reiner but gets the royal runaround.) Levin’s curiosity and evenhandedness distinguish the movie, though he’s largely silent about the pro-Israel lobby’s influence on U.S. foreign policy, the basis for some of his subjects’ paranoia. 93 min. Landmark’s Century Centre.