In this fourth and final installment the intrepid crew is taken to the limits of their endurance as they brave a subterranean world filled with dangers and bizarre wonders. When Thurid’s warriors are defeated the crew frees the Grettig family from ca
When I wrote ths book in 2000, I was concerned about children having access to the Internet and to chat rooms where "you can be anyone you want." Here we are many years later and the situation with children talking freely to stangers on the Internet
