At the dawn of the 20th century, following their father's arrest on suspicion of betraying state secrets, the three Waterbury children—Bobbie, Phyllis and Peter—move with their mother to Yorkshire, where they find themselves involved in unexpected dramas along the railway by their new home.
Mrs. Waterbury
Albert Perks
Old Gentleman
Charles Waterbury
Roberta 'Bobbie' Waterbury
Phyllis Waterbury
Peter Waterbury
Doctor
Ruth
Russian
Aunt Emma
Bandmaster
Mrs Perks
Jim
Mrs Viney
Photographer
Maid
CID Man
Cart Man
