From the esteemed New York Times bestselling and multi-award-winning author Mac Barnett comes a thrilling, hilarious fully-illustrated spy adventure series!
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!

historical facts masterfully woven throughout the plot
full-colour illustrations on every page
perfect for kids who love to laugh themselves silly.