EXCLUSIVE: British director Simon Rumley used a real life 1982 murder case as a spring board for his horror pic Johnny Frank Garrett’s Last Word which is making its world premiere at the South By Southwest Film Festival’s Midnighters section on Sunday at the Alamo Lamar. Garrett was a teenager from the wrong side of the tracks in Amarillo, Texas who was accused of raping and murdering 76-year old nun, Sister Tadea Benz on Halloween. Despite claiming innocence, Garrett (played by Devin Bonne in the film) is sentenced to death. Taking this incident up a notch, Rumley’s take on events has Garrett scribbling a curse letter, threatening to return and kill those involved with the sentencing of his death — and their families too. In this clip, Garrett dishes out some infamous last words. Johnny Frank Garrett’s Last Word will also play Tuesday, March 15 from 11:45pm to 1:20am at Stateside Theatre and Saturday, March 19 from 4:30pm to 6:05pm at Alamo Lamar C. Pic stars Mike Doyle, Erin Cummings, Sean Patrick Flanery and was produced by Frank Mancuso Jr, Peter Facinelli, Rob DeFranco, Eric Gores Jr. Adam Goldworm and Rumley are EPs.