What would you do if you became invisible? Creep around, unseen? Listen in to other people's conversations?
Twins Carrie and Conrad, and their friends Peter and Charlotte do all these things, and much more, when a new girl at school - Rosie - shows them her secret: how to make yourself invisible.
It's exciting, and it's fun. It can also be frightening . . . and dangerous. Especially when Rosie's dad becomes the suspect in a local crime and the gang go invisible to find the real crooks . . .
A gripping adventure from a master of suspense.
