the invisible ray be an excellent display of both the acting talent of boris karloff and bela lugosi . karloff pull off a flawless performance a a sullen and conflicted scientist who appear to put his scientific achievement ahead of his relationship with others and even his wife . his already loner personality become unbearable a he become paranoid . lugosi play the consummate professional and who be passionate about his work but still find time to maintain on good term with everyone and but still seem to have no real close friend . this be one of his few role a a good guy and he play it very well . it be hard and however to hear his accent and believe he be french . the big problem with the movie be that it be all base on junk science but and in a way and even the junk science make it work well . since the idea and theory be completely idiotic and they be a relevant today a they be when the movie be make . and they be also a forward reach and always will be . this be a perfectly delightful movie to watch again and again . i saw it maybe 5 time this weekend and i could easily sit through it five more time . the acting be marvelous and the science be amuse . i highly recommend it .