Identical twins, Charlie & Cass have taken sides & quarrelled when their parents split up. Charlie is staying with Gran for the summer holidays. She explores the area, & in trespassing in the grounds of the local stately home, Cleremont Park, she starts to see ghosts. The apparitions always do the same thing when she sees them
- & as she learns more about the history of the place, it becomes clear that they are re-enacting events leading to a hidden murder. She finds that she must work with her twin, & make friends with the boy currently living in the house, in order to battle with the curse on the Cleremont family.