The Amazing Mr. Blunden is a 1972 family mystery film directed by Lionel Jeffries, based on the novel The Ghosts by Antonia Barber. The film is set in 1918, in which a war widow Mrs. Allen (Dorothy Alison) and her three children, Lucy (Lynne Frederick), Jamie (Garry Miller) and baby Benjamin are living in a tiny, squalid, Camden Town flat. A mysterious old man, Mr. Frederick Percival Blunden (Laurence Naismith) visits the family, introducing himself as a representative of a firm of solicitors. The family are told there is an opportunity to become the caretakers of a derelict country mansion in the Home Counties called Langley Park, which had been gutted by fire years before, and is now in the charge of the solicitors. Mrs. Allen's brief is to stay there until the heirs of the original owners can be traced. Out of desperation, Mrs. Allen agrees to take up the post. There are rumors that the house is haunted, and as a result few locals venture up to the property. One day while wandering...