Based on a Sherlock Holmes story, the
Sign of Four is about an ex-convict out to wreak vengeance on an army major (
Thorley Walters) who left him stranded in a penal colony while making off with a valuable stash of treasure. But with a flat, dull treatment of both the story and its characters, including Holmes and Watson, this first in an intended series of 13 such adventures is not likely to lead others to the next Holmes mystery. ~ Eleanor Mannikka, All Movie Guide