Corridors of blood
Karloff returned to classy British horror in the late 50s after 25 years with the grisly Victorian gothic of 'Corridors of Blood'.
Karloff plays a surgeon troubled by the agony caused by his craft as effective anaesthesia has yet to be developed. His experiments into finding a solution bare fruit when he makes laughing gas but his demonstration in front of his peers goes wrong when a patient wakes up half way through...