There's Nobody There

The Sinclair family buy an old house in the country to set up an antique shop. It was a workhouse in 1865 and none of its previous tenants stayed long as it was haunted by a teenage boy who died from the Plague. On their first day, the ghost moves things around in hopes that the family would move out. But in the night, the entity alerts young Tom and Gilly to a fire in the basement. The fire is put out, and the ghost agrees not to haunt the children if they would be his friends.