Includes bibliographical references (p. 383-384).

"In the wake of World War II, zoologist and adventurer Captain R. J. MacCready is sent to the frozen mountain valleys of Tibet to find a creature of legend that may hold the secret to humankind's evolutionary future--or the key to its extinction--in this explosive follow-up to Hell's Gate. It is 1946, and the world is beginning to rebuild from the ashes of the devastating war. Marked by the perilous discoveries he encountered in the wilds of Brazil, Captain R. J. MacCready has a new assignment on the other side of the globe--a mission that may help him put the jungle's horrors behind him. He is headed for the Himalayas, to examine some recently discovered mammoth bones. Arriving in Asia, Mac learns the bones are only a cover story. He's really there to investigate an ancient codex allegedly written by Pliny the Elder, a fascinating text filled with explosive secrets. The Roman naturalist claimed to have discovered a new race of humans, a divergent species that inspired the myth of the Yeti and is rumored to have the ability to accelerate the process of evolution. If Pliny's assertions are true, this seemingly supernatural ability holds unlimited potential benefits'and unlimited potential for destruction."--Publisher.