Watch I Know You Know for Free: How to Stream the Movie Online at 123Movies. . Jamie, an 11-year-old boy, is fascinated by his father Charlie’s espionage work until the world of spies becomes all too real. Charlie lives in his own reality—an undercover agent, always on an important mission, always on the move. Life for Charlie is highly charged and on the edge. He is unpredictable, explosive, yet kind hearted and fiercely protective of his Jamie who hero-worships his father.