When twelve-year-old Jacob Finn sees a shadowy figure in the attic window of the historic neighborhood mansion already rumored to be haunted, he vows to solve the ghostly mystery surrounding the property, once and for all. With the occasional help of his wise-cracking, yet scaredy-cat, best friend, Leo Holloway, Jacob starts an investigation that leads him to a mystery far greater than he expected...and solving it will become more important than he ever imagined.