This is the final book in the Tripods trilogy by John Christopher. It does a great job of wrapping up the story and explaining how the free men take on the Tripods in their golden cities.
In this book the rebel faction of free humans works to recruit others to their cause; they also spend time learning some of the technologies of the ancient people. A plan is put together to infiltrate the Tripod cities and destroys the Masters.
Fast paced and intriguing, this book is a great conclusion to the series. Will still struggles with his brashness and lack of foresight; Beanpole is as clever as ever. A quick read and a great series conclusion; this book really stands the test of time.