Sherlock Holmes investigates London's most infamous case, Jack the Ripper. As he investigates, he finds that the Ripper has friends in high places.
We've unmasked madmen, Watson, wielding scepters. Reason run riot. Justice howling at the moon.- Sherlock Holmes
You create allegiance above your sworn allegiance to protect humanity. You shall not care for them, or acknowledge their pain. There lies the madness.- Holmes
Frank Finlay also played Inspector Lestrade in Study in Terror, A (1965), another film that pitted Sherlock Holmes against Jack the Ripper. Both films also featured Anthony Quayle in a supporting role.