Regan's debut young adult novel, BLACK CHUCK, was a White Pine Award Honour Book. It is a dark, gritty, small-town coming-of-age story, that Booklist called "a superb debut," School Library Journal says is "a read that sticks in the gut," and Kirkus Reviews noted for "dynamically complex characterization and storytelling."

She is currently working on a new YA novel about a small town, a monster, a missing girl, and her heavy metal brother who is unwittingly enlisted to find her. Regan lives in Toronto with her partner, Guy, where she leaves love letters on subways for strangers to find.