Once Guilty, Now Innocent, Still Dead is a 2017 western short film written, directed, produced and edited by Mark Vizcarra. The film centers around the retrial of Tom Horn in Wyoming nearly a century after his sentencing and execution. It stars Peter Sherayko, John Marrs, Larry Poole, Jor-el Vaasborg, and Shane P. Allen.
Vizcarra wrote the script and titled the film after reading a New York Times article on the mock trial of Tom Horn 90 years after his execution in Wyoming. Principal photography was in Ramona, California.
The film premiered on October 21, 2017, at GI Film Festival San Diego.