Meet Ruby Redfort: Every smart kid’s smart kid.
Ruby Redfort has a lot of reasons to feel confident. When you’ve dodged death as many times as she has you’re bound to get a little fearless, which is a good thing, right?

Wrong. fearlessness gets you taking risks. Risks lead to danger.
And danger can get you dead. Just can’t see it? Let me spell it out…

Ruby Redfort: undercover agent, code-cracker and thirteen-year-old genius –she’s one fearless kid, buster.

Unmask a murderous villain? All in a day’s work.
A rooftop chase? Take a leap of faith.
Crack a fiendish code? It’s staring you in the face.
See the warning signs? Not so much. Ruby’s taken to thinking she’s invincible, and recklessness always becomes before a fall. Then along comes a ghostly foe, stealing from the highest buildings in Twinford. 

How do you catch a thief who isn’t there? And how do you cheat death, when you can’t see danger any more…?