The Pearl of Death

The Pearl of Death is a 1944 Sherlock Holmes film starring Basil Rathbone as Holmes and Nigel Bruce as Dr. Watson, the ninth of fourteen such films the pair made. The story is loosely based on Conan Doyles short story The Adventure of the Six Napoleons but features some additions, such as Evelyn Ankers as an accomplice of the villain, played by Miles Mander, and Rondo Hatton as a brutal killer.

Later, Holmes hears of an apparently motiveless murder. An elderly Colonel is found with his back broken amid a pile of smashed china. Holmes takes an immediate interest in the case as the unusual method of killing is that of The Hoxton Creeper Rondo Hatton, known to be Conovers righthand man.Another murder occurs, of a little old lady, also surrounded by smashed china. Conover makes two attempts to kill Holmes, who surmises that Conover is desperately trying to recover the stolen pearl. ........

Source: Wikipedia