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Alan Turing is one of the most interesting unheralded figures of the 20th century. A genius mathematician, Turing was primarily responsible for decoding the Nazis’ “enigma” code and giving the Allies a leg-up in World War II. He should have been put on the money. But he was gay at a time when that wasn’t permitted, and so he became a criminal instead.

Codebreaker is a docu-drama about his life, and was nominated for a GLAAD Award. And it’s scheduled to show in Dallas next Tuesday. Scheduled, but not confirmed. The company releasing it has an interesting business model: They’ve booked a theater (AMC NorthPark) for April 9 at 7:30 p.m., but if they don’t sell at least 50 tickets, they can’t show the film. So this is your chance: Sign up here and help make the screening happen.