Thirteen-year-old Ruby, a genius code-cracker and daring detective, gets an anonymous call setting a challenge that leads her to the headquarters of Spectrum, a highly secret anti-crime agency that needs her help to crack a code, but soon Ruby uncovers dastardly plans of the Fool's Gold Gang.
- ISBN10 0763651206
- ISBN13 9780763651206
- Publish Date 27 March 2012
- Publish Status Out of Stock
- Imprint Candlewick Press (MA)
- Format Hardcover
- Pages 400
- Language English