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

This book has been graded for interest at 13-18 years.

This book was published by Farrar, Straus and Giroux (Byr) .

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.