影片讲述了玛莎・霍夫曼的故事 —— 她是一位性格古怪的富有的赞助人,却被女儿们送进了一家精神病诊所。专家证人卡萨雷斯着手调查:此事究竟是女儿们为掌控母亲财产而设下的阴谋,还是玛莎确实患上了某种痴呆症 —— 这种病症不仅威胁到她自身的健康,也对家人的安危构成了风险。。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...。