This is an adventure story about two children, Peter & Penny, who are evacuated from London to Yorkshire during the second world war. They are taken in by a couple who turn out to be German spies. Peter hears a strange noise and goes to investigate what it is. It turns out to be Morse code. When the spies realise that the children have guessed what they are doing they imprison them leaving a fierce dog to guard them. When the house catches fire the children are trapped and only escape just in time with the help of their friend Jack.
- Historical Fiction
- 12 and up