PROLOGUE MEGAN I eased the slender metal pry tool from my pocket and wedged it under the edge of the ceiling vent. A drop of sweat from my forehead hit the metal ductwork. “Where are you, Meggie?” My dad’s voice was terse in the comms unit in my ear. “About to drop down,” I murmured back, carefully pulling the vent cover beside me. My lanky, teenage body was wedged into the duct of the Tatum Auction House, twenty feet above the display case holding the Blue Empress Ring–a flawless Burmese sapphire set with baguette diamonds valued at over three million dollars. It was on display for viewing but was set to be sold Saturday. The window to nab the jewelry was now or never. “The timeline moved up by five minutes.” I froze. Five minutes.“Why?” “Calculating error in the security system re