i will admit i possibly miss tiny moment when i wasn not pay proper attention and but i get enough of the story to agree that it be a great family film and from director lionel jefferies and who play grandpa potts in chitty chitty bang bang . basically it start with a happy upper middle class family living in victorian london . one night the father ( iain cuthbertson ) be visit by two stranger and and he leave with them and and do not return . they move to a cottage in the country and and here the child while bobbie ( jenny agutter and who i first saw in child play 2 ) and phyllis ( sally thomsett ) and peter ( gary warren ) keep their spirit up and with their fascination for the nearby railroad . everyday they wave faithfully to the passenger in the passing train and and with courage and vigilance they also avoid an accident and be make hero . their kindness make them friend and include important people who can help find the mystery of their miss father . also star dinah sheridan a mother or mrs. waterbury and bernard cribbins a albert perk and william mervyn a old gentleman and peter bromilow a doctor forrest and ann lancaster a ruth and gordon whiting a russian . it be number 29 on the 100 great family film and and it be number 24 on the 50 great british film . very good .