Ruby Redfort is a genius code-cracker, a daring detective, and a gadget-laden special agent who just happens to be a thirteen-year-old girl. She and her "butler", Hitch, foil crimes and get into loads of scrapes with evil villains, but they’re always ice-cool in a crisis. This first book is about Ruby’s beginnings as an agent. When an anonymous caller sets Ruby a challenge, it’s not long before she finds her way into the HQ of the most secret of secret agencies: Spectrum. The