Twelve-year-old Jake McCauley suspects his family's new Russian boarder, Mr. Shubin, is a spy who may have connections to his father's disappearance during World War II. Set in 1953 during the height of the Cold War, Jake is determined to uncover the truth about Mr. Shubin's activities, especially his use of photography equipment and his proximity to an Air Force base. Jake's mother believes Mr. Shubin knew his father, but Jake's skepticism drives him to investigate, risking his own safety to expose a potential threat to American national security.

The premise sets up a compelling middle-grade mystery with a historical backdrop. The narrative is likely to engage young readers with its themes of espionage and personal investigation, framed within the tense atmosphere of the Cold War. The author's background as a Newbery Honor recipient suggests a focus on strong character development and a well-crafted plot. The story appears designed to balance the intrigue of spycraft with the relatable experiences of a young protagonist uncovering secrets.