really good horror flick feature to of the great and boris karloff and bela lugosi . dr. janos rukh ( karloff ) be on an expedition in africa try to find an ancient meteorite . after find it and rukh be poison by the it radiation . all he touch dy and the dark side of rukh make him become an egotistic murderer . his friend and dr. felix benet ( lugosi ) find a limited remedy to the problem and at the same time realize the radiation could be use for the good of mankind by cure disease . the two fiend will battle over the radiation possibility . pretty good special effect . others in the cast represent france drake and frank lawton and beulah bondi and frank reicher .