When twelve-year-old Theresa Martinez's mom dies, money problems force her family to move into her dead grandmother's creepy old mansion. Immediately, strange things start to happen. The powdered sugar she's been searching the kitchen for suddenly falls out of a cupboard. Closed curtains are mysteriously open—all fun stuff for Theresa's new ghost-obsessed friend Kerry. When they find out the reality show,Ghosters, is hosting a contest for the best paranormal recording, Theresa remembers Dad's money problems and vows to win the contest. Along with Joey, her little brother who has Asperger's, the girls use Kerry's ghost-chasing equipment to hopefully capture prizewinning evidence. They soon discover that ghosts are just the tip of the stunning mysteries the old house holds.
The excitement continues. It’s been a year since Theresa and her English friend, Kerry, won the Ghosters contest. Now her little brother, Joey, has stumbled on a mystery in the school library. Blasts of cold air, lights that flicker, and books flying off the shelves start Joey and his friend, Elbie, searching for the reason. Elbie lives above his family’s mortuary and is very comfortable around the ghosts that troop through its halls. He’s a prankster and doesn’t mind Joey’s Asperger’s behaviors. When the boys discover a ghost holding Joey’s bug book hostage, they team up with Theresa and Kerry to decode the ghostly messages found in the titles of the books thrown by the library ghost.