It's a race against time to rescue a kidnapped scientist in this suspenseful tale by an Edgar Award–winning author.

The world is under threat of destruction. As the politicians hedge their bets with atomic weapons, it seems no one is safe.

The only hope? A brilliant professor who knows how to make nations and people invulnerable to atomic attack. The only problem? Professor Julian Conway has been kidnapped by power-hungry men wishing to use his expertise for themselves.

At British intelligence's top-secret Department Z, Gordon Craigie assigns agent Peter Ross to get the professor back: dead or alive. Complicating the case, though, is the fact that Ross is in love with two beautiful women: one of them the professor's daughter, and the other a possible key to the whole mystery . . .