Synopsis - The sirens wailed at Kenmarsh Prison as the hardened criminal slid over the wall and dashed for freedom into the stormy night. He stumbled through the undergrowth-making for a quarry where he was to meet his accomplice. And that accomplice was none other than Miss Bullivant, school mistress of Bessie Bunter and Company! Her brother, Grant Bullivant, was the convict. The girls learn of the meeting – and try to help their mistress. But a spiteful ‘informer’ at school tells the police-and it seems that nothing can save ‘The Bull’ from disaster.