[1] He has served as a consultant on over 1,000 film scripts over the past three decades, and is also known for the screenwriting software program Blockbuster (originally "Storyline Pro").
He is the author of Anatomy of Story: 22 Steps to Becoming a Master Storyteller, a book about screenwriting skills.
In the 1980s, Truby received his first credits, writing three episodes of 21 Jump Street, as well as serving as a story editor.
He later received a co-writer credit on the 2011 Disneynature documentary film African Cats.
[4] Unlike many authors and teachers on the subject, Truby is critical of Syd Field's three-act "Paradigm", viewing it as a mechanical means of storytelling, and argues that most teachers of screenwriting emphasize inner transformation of characters but not the moral effect their actions have on others.