When Tom's brother Peter gets measles, he is sent to stay with his Uncle Alan and Aunt Gwen in a flat with no garden and an elderly landlady, Mrs Bartholomew, living upstairs. Because he may be infectious, he is not allowed to play outside and feels lonely. Without exercise he is less sleepy at night and when he hears the communal grandfather clock strangely strike 13, he investigates and finds the small back yard is now a large sunlit garden.
| Directing | Willard Carroll | Director |
| Writing | Willard Carroll | Screenplay |
| Writing | Philippa Pearce | Novel |
| Production | Steve Christian | Executive Producer |
| Production | Nick De Grunwald | Co-Producer |
| Production | Eva Redfern | Co-Producer |
| Production | Charles Salmon | Producer |
| Production | Adam Shapiro | Producer |
| Production | Yukio Sonoyama | Executive Producer |
| Production | Marie Vine | Executive Producer |
| Production | Thomas L. Wilhite | Executive Producer |
| Sound | Debbie Wiseman | Original Music Composer |
| Camera | Gavin Finney | Director of Photography |
| Editing | Les Healey | Editor |
| Production | Joyce Nettles | Casting |
