Christopher, fifteen years old, has an extraordinary brain – exceptional at maths while ill-equipped to interpret everyday life. When he falls under suspicion of killing Mrs Shears' dog Wellington, he records each fact about the event in the book he is writing to solve the mystery of the murder. But his detective work, forbidden by his father, takes him on a frightening journey that upturns his world.
BBC adaptation of Raymond Briggs' children's book. Fungus (voice of Mak Wilson)'s job is to venture above Bogeydom and scare dry-cleaners (a Bogey's name for humans). But on one trip disaster strikes and a dry-cleaner discovers their existence in Bogeydom. The dry-cleaner, Jessica (Clare Thomas), strikes up a friendship with Fungus' children and escapes back home to tell her father George (Martin Clunes) all about it. George then decides to stake-out the entrance to Bogeydom, in order to catch a real-life Bogeyman.