Zachary Pikus is an inventor running from the government and drinking himself to death.
Xi Wu is a girl wreaking havoc with a nuclear weapon after leaving a terrorist cell.
They are "Those Who Know,"
What do they know? How do they know it? Why must they struggle with fake spiritualists and UFO-chasers, while the world crumbles around them?
The answers to these questions are revealed in "Those Who Know," an Andy Comb Mystery.