A fondly remembered film from my youth and one I've re-visited more than once since, it still charms me today. A delightful and thrilling fantasy, it plays almost as well to adults as to its no doubt target audience of children.
The Dickensian-styled story is well-wrought with a nice blend of mystery, enchantment and adventure throughout. Sympathetically and winningly directed by British character actor Lionel Jeffries who gives himself a brief expository scene too, it's a perfect example of family entertainment.
All the principal characters are well-played, especially Laurence Naismith as the twinkle eyed title character, out to right wrongs from a hundred years before and Diana Dors as an over-the-top scheming harridan figure whose plans the amazing Mr B thwarts with the help of two young children from the future. All the child-actors act very well and for the most part avoid the usual wooden-ness in similar portrayals.
I won't give away any of the ingenious plot but it all resolves and revolves around a race to save a young heir and his sister from being murdered in a deliberately-set house fire in a plot devised by Dors and acted upon by her simpleton husband. In fact the film just tails off a little after its fiery climax, although it redeems itself with a happy ending and an unusual but warm-hearted end-credit sequence wholly in keeping with what has gone before. There's a fine understated score by Elmer Berstein too.
It probably helps that this film evokes my happy child-hood but watching it again forty years on, I'm pleased to say I enjoyed it just as much as I did in a Glasgow flea-pit in 1973.