1 videodisc (74 min.) : sound, black and white ; 4 3/4 in.
System Details
DVD.
Cast
Arthur Wonter, Ian Hunter.
Summary
A beautiful young woman seeks the help of Holmes and Watson when the mysterious benefactor who has been sending her a pearl each year since her father disappeared wants to meet her. Involved are a priceless hoard of Indian treasure and a murderer, whose trademark is "the sign of four."