The brothers told The Daily Herald they became attracted to the story while researching a script on the 19th Century bandit Billy the Kidd.
The feature-length documentary "Fly Colt Fly: Legend of the Barefoot Bandit," premiered earlier this month at the Toronto film festival. It blends interviews with animation to tell a story that is as much about myth as fact.
Harris-Moore began breaking into homes and cabins on Camano Island as a teenager. Burglaries continued after he escaped from juvenile detention in 2007. It included stealing planes and ended with his arrest in 2010 in the Bahamas.
The 22-year-old is serving a seven-year prison sentence.
Watch the trailer for the documentary: