From a young age he was drawn to illustrating for comic books and the complex characters within them.
He wrote a spec script for Buffy the Vampire Slayer as his first work in television.
His first script, co-written with co-executive producer Jaime Paglia, was the freshman season episode "The Flash is Born.
"[2] In 2016, Rafferty began writing for another comic book television adaptation in Fox’s Lucifer.
His writing debut for the show was the ninth episode of the first season, titled "A Priest Walks into a Bar."