An old enemy of Frank's breaks out of jail bent on revenge. He's coming to St Hope's to steal Frank's invention, the Dark Star. Can the team stop him?

Rose is on a training course, although half-term is about to start, and Oscar and Carrie are awaiting an exciting mission. But Frank is acting strangely. Whilst in HQ, he receives a call, and Oscar and Carrie notice his reaction. Will this be something connected to a mission? No. Frank sends them both home. Disappointed and suspicious, Carrie and Oscar leave school. Something is not right.

In a prison cell across town, Colt Winchester is broken out of prison by his two cohorts, Butch and Mad Dog. They're coming to St Hope's and they're coming for one thing: the Dark Star. The Dark Star is Frank's prize-winning invention. It emits darkness and can turn a large area pitch black in an instant. Frank designed it with good intentions but Colt wants to use it to hold the Government to ransom.

Frank is awaiting their arrival and has booby-trapped the school. He won't allow Colt to take his Dark Star. He knows how dangerous Colt is, which is why he sent Oscar and Carrie home. But Carrie and Oscar have another plan. They're back in the school to protect Frank whether he likes it or not. Will the spies save Frank and his Dark Star from the clutches of the evil Colt? Show less