After the enforced absence of their father, the three Waterbury children move with their mother to Yorkshire, where they find themselves involved in several unexpected dramas along the railway by their new home.
Mrs. Waterbury
Dinah Sheridan
Albert Perks
Bernard Cribbins
Old Gentleman
William Mervyn
Charles Waterbury
Iain Cuthbertson
Roberta 'Bobbie' Waterbury
Jenny Agutter
Phyllis Waterbury
Sally Thomsett
Peter Waterbury
Gary Warren
Doctor
Peter Bromilow
Ruth
Ann Lancaster
Russian
Gordon Whiting
Aunt Emma
Beatrix Mackey
Bandmaster
David Lodge
Mrs Perks
Deddie Davies
Jim
Christopher Witty
Mrs Viney
Brenda Cowling
Photographer
Erik Chitty
Maid
Sally James
CID Man
Dominic Allan
Cart Man
Paddy Ward