The Invaders - Flanagan, John

Hal and the Herons have done the impossible--they've beaten the strongest, most skilled warriors in all of Skandia to win the Brotherband competition. But their celebration comes to an abrupt end when the Skandians' most sacred artifact is stolenNand the Herons are to blame.

The Invaders 2013, Puffin Books

ISBN-13: 9780142426630

Trade paperback

The Invaders 2012, Philomel Books, New York, NY

ISBN-13: 9780399256202