Find out if Mason Mooney can save Grimbrook in the thrilling final instalment...“With plenty of mystery and magic, this volume is a great read for Halloween.”—School Library Journal “A paranormal fiction lover’s dream.”—Youth Services Book Review Your favorite paranormal investigator is back, with yet another adventure that is sure to have you glued to your seat. No, it’s not dreamboat Trent Reilly and his Paranormal Society, it’s Mason Mooney! Mason and his best friend Iris are on a mission to recover his missing heart and stop Talitha from causing even more mayhem in Grimbrook. To do so they’ve got to enlist the help of the mysterious Order of the Emerald Palm . . . and enter another dimension! But when Iris is sucked away into a wormhole, Mason must decide what’s more important: being the best paranormal investigator in the world or saving his friend.