Synopsis

Thomas felt unwell, so Edward took him to the Works for repairs. While Thomas was away, Duck filled in, proving very popular with Annie, Clarabel, and the passengers. Upon his return, Thomas resumed his duties. However, the workmen hadn't properly fixed his handbrake. One day, the Fireman failed to pull it hard enough, and Thomas and his coaches began to run away. Only Harold and an Inspector could manage to halt the runaway train.