Dr. Mortimer asks Sherlock Holmes to help protect Sir Charles Baskerville who has returned to England to take his place at the family seat following the death of his uncle, Sir Charles Baskerville. Sir Charles died of cardiac exhaustion and Dr. Mortimer believes he was frightened to death. There appears to be a curse on the family dating back nearly 200 years to when Sir Hugo B... (展開(kāi)全部)