Publisher's Summary What’s Mac B.'s newest top-secret mission? Travel to Iceland and retrieve the ravens that were stolen from the Tower of London...before Britain is ruined. In Iceland, he discovers secret submarines, hungry polar bears, mysterious blueprints...and his old archnemesis! Is the KGB man behind this birdnapping? Can Mac get the ravens to safety? It's time for an epic top-secret smackdown between these two secret agents!  With fascinating historical facts masterfully sprinkled throughout, the third entry in the Mac B., Kid Spy series offers adventure, intrigue, absurdity, and humor. ©2019 Mac Barnett (P)2020 Dreamscape Media, LLC