'Convinced Oriana was behind his little sister's kidnapping, Cal teams up with Boges to pull off a plan to extract vital information out of her. Together they plant a listening bug in Oriana's house by firing it through her window with an air rifle!
'But will spying on his would-be killer reveal the location of the precious Jewel and Riddle, or will it put Cal in the line of fire?' (From the publisher's website.)