Spooky Shape is a rhyming magazine story.
The station is being decorated for a Halloween party. BoCo is a bit worried that he will be spooked by some of the scary costumes. Diesel just sneers, believing that nothing scares him. He enters a dark engine shed where he sees a big strange head. Diesel is very alarmed and races out of the shed. A porter tells Diesel that the big head is merely the stationmaster's cat's shadow.