This book is part of a book series called Sherlock Holmes-The Legend Begins .

This book has been graded for interest at 12-18 years.

There are 342 pages in this book. This book was published 2012 by Square Fish .

Andrew Lane is a writer and journalist. He is the author of the bestselling and internationally acclaimed Young Sherlock Holmes series. Lost Worlds is Andrew's second series for children. He lives in Dorset with his wife and son.