6 books in series
4 out of 5 stars 1,353 ratings

Orion Publisher's Summary

John O'Ryan is not a god...not exactly. He is an eternal warrior destined to combat the Dark Lord through all time for dominion of the Earth. Follow him, servant of a great race, as he battles his enemy down the halls of time, from the caves of our ancestors to the final confrontation under the hammer of nuclear annihilation.
©1984 Ben Bova (P)2010 Audible, Inc
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