When the Russians build an experimental undersea city in the Arctic Ocean the Americans want to know what it's about - for the nation that can control the sea today can control the world tomorrow!
The only man capable of such a mission is the Death Merchant. He must infiltrate Zemlya One (guarded by the infamous KGB security boss Colonel Vershemsky), get the information, and escape - taking with him the Russian-born CIA contact living on
One man against a Russian city!
No small wonder that the Death Merchant considers this his most dangerous mission ever.