one doesn not get to enjoy this gem and the 1936 invisible ray and often . but no can forget it . the story be elegant . karloff and austere and embitter in his carpathian mountain retreat and be janos rukh and genius science who read ancient beam of light to ascertain event in the great geological past particularly the crash of a potent radioactive meteor in africa . join him be the ever elegant lugosi ( a a rare hero ) and who study astro chemistry . france drake be the lovely and underused young wife while frank lawton the romantic temptation while and the divine violet kemble cooper be mother rukh and in a performance worthy of maria ospenskya . the story move swiftly in bold episode and with special effect that be still handsome . it also contain some wonderful line . one rukh restore his mother sight and he ask and mother and can you see and can you see . yes and i can see more clearly than ever . and what i see frightens me . even well when mother rukh say and he break the first law of science . i be not alone among my acquaintance in have puzzle for many many year exactly what this first law of science be . this movie be definitely desert island material .