Rohan is the author of the acclaimed trilogy Knightley & Son. He grew up with a love of movies from his father, and listening to multicultural stories told by his mother, children's author Jamila Gavin. He became an English scholar at Exeter College, Oxford, then a fellow at the American Film Institute in Los Angeles, where he began his career as a screenwriter, adapting Crusoe for NBC and classic sci-fi novels like The Stars My Destination and Stainless Steel Rat for Twentieth Century Fox, before deciding to write books himself.