Robert Louis Stevenson's schizophrenic scientist is chillingly reinterpreted here by the tireless Michael Caine. As the deranged doctor Jekyll, Caine becomes involved with his sister-in-law, bringing out the worst in his murderous alter-ego. This ABC television production was filmed in London with a British cast.
Dr. Jekyll, a scientist with dreams of transforming the world, develops and drinks a potion that can separate the good and evil aspects of man. But his experiment goes awry, and he metamorphoses into the twisted and sadistic Mr. Hyde, a creature possessed of only the basest human qualities. Mr. Hyde wanders the darkest streets of foggy London, turning the city into a nightmare as he preys on those he encounters in this "parallel life". At first Dr. Jekyll manages to keep his other identity secret... but Mr. Hyde gradually begins to take over the good doctor's personality -- and to kill the beast, Dr. Jekyll will also have to destroy himself.