Jason Dean Hall was born on April 28, 1972 in Lake Arrowhead, California. He played the recurring character of Devon MacLeish in Buffy the Vampire Slayer. He had a guest starring role on Without a Trace as Jesse in season two. As a screenwriter, Hall co-wrote Paranoia (with Barry Levy) and wrote the screenplay for American Sniper, for which he received an Academy Award nomination for Best Adapted Screenplay.

For more information press link below:

https://en.wikipedia.org/wiki/Jason_Hall_(screenwriter)