During the Cold War of the 1950s former allies Russia and China turned communist, their threat casting a shadow over the free world. Yet another enemy lurked in the shadows—the deadly secret assassins of the Si Fan, led by…In remote Northern China, the dead walk again. American agent Tony McKay finds himself face-to-face with these “cold men,” zombies who exist to do the bidding of the Devil Doctor. It falls to McKay and Nayland Smith to defeat their eternal foe, and to destroy a biological warfare facility the Russians have hidden deep in the Chinese jungles.