The ultimate duo — Nina Wilde and Eddie Chase — return in their ninth action-packed adventure. Secrets from the past emerge to threaten archaeologist Nina Wilde and her husband, former SAS soldier Eddie Chase, when a Viking runestone is stolen by a murderous gang of raiders. The stone holds the key to an ancient evil concealed in one of Norse mythology's holiest places: Valhalla. Travelling to Sweden, Eddie and Nina find themselves in a race against time to locate the legendary hall of the Viking warriors — before rival powers claim its deadly contents for themselves. It is a quest that will force Eddie to revisit a dark chapter from his mercenary days that he has kept hidden from everyone... including his wife. Only Nina and Eddie can prevent the unleashing of a primordial terror from the depths of the earth. But even if they succeed, will the cost be greater than either of them could have ever imagined...

Deep in the jungles of South America, an incredible treasure has been hidden for centuries. Archaeologist Nina Wilde possesses the key to finding it — but in her way stand revolutionaries and drug lords, all fighting for control over the riches from a lost empire! Nina Wilde and Eddie Chase are back for their seventh blockbusting adventure by the bestselling author of THE HUNT FOR ATLANTIS, Andy McDermott. This time their goal is the legendary last outpost of the Inca Empire — which could point the way to an even greater discovery long thought to be just a myth: El Dorado, the lost city of gold. Corrupt soldiers, ruthless mercenaries — led by a man with a personal grudge against Eddie — and murderous rebels will stop at nothing to obtain the unimaginable fortune for themselves. But even as they all battle to find the treasure, Nina and Eddie's greatest enemy may turn out to be someone much closer to home...