Joe Hawke and the ECHO team return in VALHALLA GOLD to face a mysterious enemy who is fighting a war darker and more ancient than any of them could imagine. Drawn into a violent murder in Canada, Hawke and his team must race against time in pursuit of an ancient Norse legend which takes them from Iceland to a Spanish castle and to the museums and backstreets of Stockholm. Meanwhile someone is hunting Sir Richard Eden and the rest of the team on Elysium...