From Atlanta to Alaska to the exotic shores of Indonesia, Frank and Joe Hardy have penetrated the inner sanctum of a worldwide terrorist network: The Assassins. Now drawn into the enemy's lair, the Hardys face their greatest challenge and greatest risk -- to uncover the true purpose and power of the violent criminal conspiracy.

Trapped deep in the Indonesian jungle, their covers blown, the boys can't afford to turn back. They confront a force so potent, an intelligence so evil, there's no time to seek reinforcements. Braving the heights of terror, Frank and Joe alone will have to defuse an explosive scheme that could erupt into a catastrophe of global proportions!