James Harrison loves the new cottage into which his family has moved. But why does his dog keep barking at the air, why is James's room so cold - and who wrote `Alchemie' on the blackboard?
James discovers the amazing explanation for the strange happenings at the cottage, but no one will believe him.
Perhaps the solution to James's problems in an exorcist - or would the local wart charmer and water diviner do?
Help comes James's way in the unexpected shape of a long-forgotten manuscript and a Victorian boy called Arnold.
In the final episode, James fears that his neighbour may be a witch, that it might be dangerous for the archaeologists to be digging in an ancient burial ground and that Thomas may be getting stronger.