Long before anesthesia, operations in London hospitals were wards of screaming patients in great pain and suffering. In 1840, Dr. Thomas Bolton (Boris Karloff),a great humanitarian surgeon, tries to eliminate all the pain and suffering connected with surgery. Bolton tries out experiments on himself and as a result becomes addicted to the drugs which he is taking. Some of Dr. Bolton’s pain-killing gas works against him and a patient revives and attacks employee’s of the hospital, therefore, Dr. Bolton is dismissed. Bolton wanders into the Seven Dials, a disreputable tavern and is taken over by the innkeeper, Black Ben(Francis De Wolff) and his assistant, Resurrection Joe(Christopher Lee)(The Dracula of the 60’s) This film was originally titled “Doctor from Seven Dials, and this film was produced back-to-back with “The Haunted Strangler” by the same director, Robert Day. This film is a great old gaslite melodrama of Old London in B&W and gives you the creeps with all the cries of pain, blood and pain. Karloff plays a very calm doctor in Wolf’s clothing, ready to do his THING!