Tripods: The Pool of Fire: Book 3

This is the conclusion of the Tripods series written under the name John Christopher. These young adult science fiction stories are set on Earth ruled by the alien Tripods. A prequel detailing the conquest was added 20 years later. The series: 0.5 (Prequel) When the Tripods Came (1988) 1. The White Mountains (1967) 2. The City of Gold and Lead (1967) 3. The Pool of Fire (1968)