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Today's trailer is for "Uncle Howard," one filmmaker's tribute to another, which will screen at the 2016 Sundance Film Festival, starting in one day.

Filmmaker Aaron Brookner's movie is a search for the work of his uncle, Howard Brookner, who made a splash with his debut film, the 1983 documentary "Burroughs: The Movie." The original negative of the movie, as well as unused footage, lies on dusty shelves in a bunker that was the New York home of writer William S. Burroughs.

Aaron Brookner talks to people who knew his uncle — including filmmakers Jim Jarmusch and Tom DiCillo, who worked on the movie — for insights on the man Aaron knew only from childhood. (Howard Brookner died in 1989, from AIDS, as he was completing his first narrative film, "Bloodhounds of Broadway.")

The trailer was launched online today, exclusively by Entertainment Weekly. (Here's EW's story on the film.)

"Uncle Howard" screens in the festival's U.S. Documentary competiton.

— Sean P. Means