Upon her arrival in London to train as a spy, sixteen-year-old Nicki Haddon is assigned to help the British Secret Service infiltrate a drug cartel that is smuggling large amounts of heroin into the country. Working undercover, she discovers a plot to create a super-potent opiate and also discovers a royal connection—one that goes back to Queen Victoria herself. Nicki's kung-fu skills are tested more than ever in this action-packed thriller, as the teen spy unravels this new case and the ongoing mystery of her own past.