Spy-Hunters #13

When spies steal a crucial control unit from an atomic pile at Atlantic University, Professor Harvey's son Bill discovers they've triggered a countdown to catastrophe—the apparatus will explode in exactly three hours, obliterating the entire city. With his dying father's final plea to stop them, Bill races against the clock through the city to track down the foreign agents and recover the master unit before dawn breaks over a smoldering wasteland. "Three Hours to Doom!" is a relentless spy thriller that traps one man between impossible odds and the ticking seconds that separate millions from disaster.

During World War 2, a French courier named Pierre carries a vital message written in invisible ink on his back through Nazi lines to the Resistance—but when he's trapped by enemy guards on his return journey, he must act fast to protect the intelligence he's carrying. This thrilling account showcases the ingenious methods spies and couriers employed to conceal and destroy sensitive information, from ultraviolet-activated inks to dissolving papers and hidden microfilms, proving that the battle for secrets was as cunning as the battle itself.

Jake Walters, a fortune-hungry demolition expert, is strong-armed into a seemingly lucrative job by the mysterious Lal Singh—divert the Jhelum River in Kashmir for a Rajah's ransom and claim the world's greatest ruby as his prize. But when Jake discovers the river diversion will starve millions of innocent people, he's trapped between his greed and a moral line he never expected to face, with ruthless Sikhs and cunning spies closing in on all sides.