Sherlock Holmes and Doctor Watson are tasked with protecting Swiss scientist Dr. Franz Tobel and his groundbreaking invention, a new bombsight, from a network of dangerous enemy agents who are determined to steal his work for their own gain.

Sherlock Holmes And The Secret Weapon (1943)

Sherlock Holmes investigates when young women around London turn up murdered, each with a finger severed off. Scotland Yard suspects a madman, but Holmes believes the killings to be part of a diabolical plot. 