本片是一部英国悬疑片，由罗伯特·斯特灵导演，由Peter Cushing/Nigel Stock/Ann Bell主演。
剧情简介：When she receives pearls beyond price and a mysterious message from an anonymous source, Miss Mary Morstan goes to the famous consulting detective of 221B Baker St., Mr. Sherlock Holmes for advice in how to answer the message. Together with his staunch comrade, Dr. John Watson, and a mutt named Toby, Holmes tracks down the secret of the Sign of Four.
外文名：The Sign of Four
别名：福尔摩斯：四签名
类型：悬疑 / 犯罪
地区：英国
导演：罗伯特·斯特灵
编剧：阿瑟·柯南·道尔 / Michael Hardwick
演员：Peter Cushing / Nigel Stock / Ann Bell
