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Publisher's Summary

Author of numerous New York Times best sellers, James Rollins captivates listeners with his thrilling Sigma Force series. 

This sixth book features Commander Gray Pierce in a race against time to solve an ancient riddle - one that prophesies the world's destruction. Pierce will have to journey from the Roman Coliseum to the icy peaks of Norway to uncover the Doomsday Key in time.

©2009 James Czajkowski (P)2009 HarperCollinsPublisher

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