Anna and the Apocalypse: The zom-com musical the writer didn't live to see
It was a trailer for High School Musical that provided Ryan McHenry with his inspiration.
The Scots film-maker reckoned the only way he might enjoy the film was "if the whole cast got eaten by zombies".
It sparked an idea for the movie Anna and the Apocalypse which goes on general release in cinemas on Friday - more than three years after the 27-year-old from Dumfries died of cancer.
Director John McPhail took on the project to bring it to the big screen.