Mac B., Kid Spy #3: The Secret Smackdown by Mac Barnett
From Orchard Books:
Ravens have been stolen from the Tower of London! Mac B.'s top-secret mission? Travel to Iceland and retrieve the ravens... or Britain is ruined!
In Iceland, Mac 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 full-color illustrations on every page and fascinating historical facts woven throughout, this series offers adventure, intrigue, absurdity, history, and humor. Catch the latest in the totally smart and sidesplittingly funny series, Mac B., Kid Spy.