Friday, an agent of the king’s royal spy ring, is in trouble. While following a suspect through the frozen streets of London, she is captured by the insidious Circle of Thirteen and spirited away to a local insane asylum for mysterious purposes. As Friday fights tooth and nail against her captors, Robin, her friend and fellow spy, defies the orders of his superiors and risks everything to rescue her. In the process, both teens learn more about the Circle’s origins and intentions, as well as uncover a bizarre conspiracy of brainwashing and murder. Andrew Lane does pretty well with his second Crusoe novel, infusing it with break-neck pacing and high-drama chase scenes. Although Robin still remains relatively flat as a character, Friday really shines through as the story’s heroine, and readers will be eager to learn more about her past as the daughter of a pirate king. A lack of mature content leads me to recommend this title to adventure fans Grades 6-8.