4. Deep Trouble - Sam was on holiday from the station and feeling quite bored.But when he volunteered to help out in Penny’s garden he soon found himself up to his neck in trouble. More info ...

When Joe invents a new super battery, it catches the attention of Professor Polonium and her trusted but rather silly sidekick Dr Crumpton.

It’s only going to be routine drill for Trevor Evans on his first day in the fire service until a message comes over the radio. “Looks like you’re in for the real thing, Trev!” says Sam.