There are two things you need to know about Susie. She is a young girl who is always interested in everything, and she always wears a ribbon in her hair. When she is thinking, she twiddles and pulls at the ribbon, until she works out what she has to do. At the moment Susie is very interested in the old wooden hut, where the children can go to get lots of games and toys to play with. But some strangers have been hanging around the hut, and Susie thinks they're up to no good. These people are grown-ups who don't seem to belong. Why are they interested in an old hut in the middle of a field? Are...

There are two things you need to know about Susie. She is a young girl who is always interested in everything, and she always wears a ribbon in her hair. When she is thinking, she twiddles and pulls at the ribbon, until she works out what she has to do. At the moment, Susie is very interested in what Mr Green, the teacher, is saying about things going missing at school. Susie is also interested in a new girl who has been seen hanging about near the library. Susie does not know this girl, she is a stranger. Has the girl been taking things, or is she completely innocent? If it's not her, then...