Ken Follett has written a page turner in The Hammer of Eden with many twists and turns.
Judy is hoping for an upgraded position within the FBI but when someone, who Judy feels is incompetent, is promoted, she finds herself with a case that no one wants. A radio talk show host is approached by a man, Priest, declaring he will cause an earthquake if demands aren't met. While this might seem like an idle threat, California has many earth moving faults that could result in seismic activity at any moment. Judy and Priest are in a battle of wits. Judy is trying to stop a possible earthquake and Priest wants to stop the building of a dam which would flood the commune he lives in.