Mysterious old solicitor Mr. Blunden visits Mrs. Allen and her young children in their squalid, tiny Camden Town flat and makes her an offer she cannot refuse. The family become the housekeepers to a derelict country mansion in the charge of the solicitors. One day the children meet the spirits of two other children who died in the mansion nearly a hundred years prior. The children prepare a magic potion that allows them to travel backwards in time to the era of the ghost children. Will the children be able to help their new friends and what will happen to them if they do?
Laurence Naismith
Lynne Frederick
Garry Miller
Rosalyn Landor
Marc Granger
Diana Dors
Dorothy Alison
James Villiers
Madeline Smith
David Lodge
Stuart Lock
Deddie Davies
Graham Crowden
Erik Chitty
Reg Lye
Paul Eddington
Aimée Delamain
Paddy Ward