Late one night, Sir Charles Baskerville is attacked outside his castle in Dartmoor, England.  Could it be the Hound of the Baskervilles, a legendary creature that haunts the nearby moor?  Sherlock Holmes, the world's greatest detective, is on the case. These reader-favorite tiles are now updated for enhanced Common Core State Standards support, including discussion and writing prompts developed by a Common Core expert, an expanded introduction, bolded glossary words and dynamic new covers.