Plenty of teenagers feel invisible.Fiona McClean actually is.An invisible girl is a priceless weapon. Fiona's own father has been forcing her to do his dirty work for years-everything from spying on people to stealing cars to breaking into bank vaults.After sixteen years, Fiona's had enough. She and her mother flee to a small town, and for the first time in her life, Fiona feels like a normal life is within reach. But Fiona's father isn't giving up that easily.Of course, he should know better than anyone: never underestimate an invisible girl.