Description:  When their father disappears under mysterious circumstances, Roberta, Peter and Phyllis leave London with their mother and settle in a country house beside the railway. Entertained by the trains and their passengers, the children form friendships in the station that ultimately assist them in solving the mystery of their father's disappearance and bringing him back to the family.

Additional information:

1. The Beginning of Things
2. Peter's Coal-Mine
3. The Old Gentleman
4. The Engine-Burglar
5. Prisoners and Captives
6. Saviours of the Train
7. For Valour

8. The Amateur Fireman
9. The Pride of Perks

10. The Terrible Secret
11. The Hound in the Red Jersey
12. What Bobbie Brought Home
13. The Hound's Grandfather
14. The End