
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.
Phyllis

Peter

Bobbie

Mother

Father

Perks
Mrs Ransome

Station Master

The Old Gentleman

Dr Forrest

Mrs Viney

Mr. Szczepansky

District Superintendent

Mrs Perks

Jim

Cook

Ruth

Aunt Emma

Bargee
Bargee's Boy

Engine Driver
Fireman

Son of Perks
Draper's Boy

Draper