Children love mystery and adventure, and these books offer the reader a unique opportunity to study some of the world's most interesting, unsolved puzzles. From bizarre creatures on the land and sea to unsolved disappearances of ships, planes, and even cities, this series will fascinate readers of many ages. Quotes and perspectives from scientists, researchers, and historians, as well as everyday people thrown into the midst of these perplexing mysteries, provides an overall viewpoint from which children can draw their own conclusions.