It is the half term break and the Five have an adventure planned already! They are going on a hike for a week. Julian has mapped out their route. Timmy hurts his leg during rabbit hunting. The slight change in their course leads Anne and Dick to a different farmhouse. There, Dick receives a cryptic message by a mysterious person. The next day, they find out that a convict has escaped from a nearby jail. Are these two incidents related?

The Five find themselves in a most exciting adventure. A little American girl shows up at Kirrin Cottage in the middle of the night. Her father was receiving threats about his daughter being kidnapped and so, for her safety, she was sent to Kirrin. It is decided that her appearance should also change as everyone knows that unwanted eyes will be looking at the Five and the girl should not be recognisable. In the midst of protecting her, George goes missing. How will they find George when they don’t even know where to look?