Duncan is a professional actor/writer living in New England. He can be seen in front of the camera in "Mystic River," "The Town," "The Judge," "By the Sea" as well as other films, TV shows and commercials. His children's historical eductional TV pilot script, "Half Pint" was produced by Original Concept & Development Associates in 2013 taking home a VanGough Award for best writing at the 2015 Amesterdaym Film Festival, and his short film "Macy's Goes to War" is currently in production with OCD. Duncan's screnplays have won awards in writing competitions and he has recieved three New England Emmy Award nominations, taking home one statue. His mystery e-novella, "Pocket Change," was published in 2015 (also an Audio Book narrated by Chris Cuilla) and a sequel called "The Dead of Winter" is in the works. He has co-authored several children's book manuscripts with award winning author Beth Glass that are looking for a publisher.

Duncan created the Emmy winning 7DayPSA competiton that challenges filmmaker teams to write, shoot & edit public service announcements for deserving non-profit organizations that can't afford the cost of professional production. In 2016 Duncan concieved of and created the Children's Hospitals International Film Festival for Flickers to bring wonderful short films from around the world to the young patients in hosptial. The festival premiered at Boston Children's Hospital in partnership with Seacrest Studios before going on to hospitals across the US and Canada. Duncan is often found in coffee shops with his laptop working on several writing projects at the same time.