Identical twins, Charlie and Cass have taken sides and quarrelled when their parents split up.

Charlie is staying with Gran for the summer holidays.

She explores the area, and 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 - and 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, and make friends with the boy currently living in the house, in order to battle with the curse on the Cleremont family .