"We've got to stop the first train!"Boris is a "tube" mouse, living in the London Underground.

His best friend is Heavy Duty, the station cleaner. One morning Boris discovers that Heavy Duty has had an accident.

Bories has to think fast. He has seen trains come and go all his life but never before has he had to STOP one!Colour First Readers are perfect for new readers and include notes be reading specialist Prue Goodwin, honorary fellow of the University of Reading.