Spy-Hunters #9

An escaped Nazi prisoner, a fanatical Soviet spy ring, and an American operative clash in the frozen waters of the Pacific—where a mysterious diving bell and a deep-sea fault line hold the key to a conspiracy that could hand Alaska to America's enemies. When the prisoner vanishes before his planned surveillance, the operative must race to intercept a ship heading for the Aleutians before the Reds can execute their devastating plan. It's a battle that plunges from the prison depths to the ocean floor in this 1950 spy thriller.

American adventurer Bill Harkness arrives in Tibet claiming to trade in musk, but carrying something far more valuable: rifles meant to arm the local tribesmen against a creeping Communist invasion. When he discovers that enemy spies are using fat-tailed sheep herds to smuggle intelligence maps back to Red headquarters, Harkness devises an audacious counterplan—one involving stampeding herds, false reports, and a daring gambit to turn the spies' own network against them. It's a high-stakes game of wits and nerve in the world's most mysterious frontier.

When a young American military officer is separated from his Soviet wife at the war's end, months of desperate attempts to reunite fail—until a scientific expedition to Mt. Ararat gives him an unexpected chance to reach her across the Armenian border. But his arrival coincides with a crucial Soviet operation: a top atomic spy needs to deliver classified American secrets in person, and the reunion Lockwood craves masks a collision course between love, loyalty, and espionage that will test them both to the breaking point.

Histiaeus, a Persian chief plotting revolt against King Darius around 500 B.C., infiltrates the king's court under the guise of loyalty—but finds himself trapped there, unable to send word back to his co-conspirator Aristagoras without the guards intercepting any message. Desperate to communicate his intelligence about Darius's defenses, Histiaeus devises an ingenious and unusual solution involving his trusted slave.