The title of Jon Foy’s Resurrect Dead: The Mystery of the Toynbee Tiles doesn’t lie: This highly engrossing and somewhat creepy doc plays like a whodunit from beginning to end. The who in question is the person or persons creating the so-called Toynbee Tiles, which have been found embedded in city streets across the United States (including Washington) and the rest of the Americas bearing some variation of this message: “Toynbee idea in movie 2001 resurrect dead on planet Jupiter.” The film follows three Toynbee obsessives as they try to hunt the tiler down; as one of the men concludes, “It’s not an art project….It’s like something that’s insane.” The tiles often come with side texts, ranging from paranoid ramblings to instructions such as, “Murder every journalist. I beg you.” Each clue, even dead ends, only makes these guys hungrier—and by the film’s end, you’ll be dying to know the culprit, too.

Friday, June 24 at 5:15 p.m. at AFI Silver 2; also on Saturday, June 25 at 10:45 p.m. at AFI Silver 3.