Somerville, Mass. : Candlewick Press, 2012, c2011.
1st U.S. ed.
383 p. ; 20 cm.
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.
A Junior Library Guild Selection
Look into my eyes