It&s 1944 & young Tolly&s (Alex Etel) mother (Elisabeth Dermot Walsh) isn&t convinced he&s safe in the Manchester while World War II is still on So she decides to send him to spend a few months with his grandmother Linnet (Maggie Smith) in the countryside After spending a few days at Linnett&s home Tolly discovers that the house is haunted with spirits who in life were members of the family As he gets to know the friendly ghosts he learns a great deal about the exciting but sometimes troubled history of the Oldknow Family FROM TIME TO TIME is based on Lucy M Boston&s best-selling book THE CHILDREN OF GREEN KNOWE