[4] It stars Laurence Naismith, Lynne Frederick, Garry Miller, Rosalyn Landor, Marc Granger, Diana Dors, Madeline Smith, and James Villiers.

In 1918, war widow, Mrs. Allen and her children, Lucy, Jamie and baby Benjamin are reduced to living in a squalid Camden Town flat.

Just before Christmas, a mysterious old man, Mr Frederick Percival Blunden visits the family, introducing himself as a representative of a firm of solicitors.

[5] The family are told there is an opportunity to become the caretakers of a derelict country mansion in the Home Counties named Langley Park, which was gutted by fire years before, and is now in the charge of the solicitors.

Mrs. Allen takes the post despite rumours that the house is haunted, her instructions to care for the property until such time as the heirs to the estate can be traced.

[6] After they have settled into the new post, Lucy and Jamie see two ghostly figures in the grounds of the house: a teenage girl, Sara Latimer, and her younger brother, Georgie.

[7] Sara tells them that she and her brother are orphans, under the care of their dissolute and hapless Uncle Bertie and the solicitor Mr Blunden, until Georgie comes of age.

Bertie marries a music hall performer, Bella Wickens[8] and her parents then move into Langley Park, ostensibly as the housekeeper and game keeper.

The children meet Mr Blunden who admits he has been tormented for over a hundred years because of the events but promises if they both help no harm will come to them.

Shortly after, the lawyer, Mr Clutterbuck, visits them and informs them that recently discovered documents show that Sara Latimer married Thomas and that their great-grandson was the late Mr. Allen.

The fire-ravaged derelict stately home was in fact Heatherden Hall, on the estate of which the studios are located and which at that time served as administration offices for the production facilities.