THE INVISIBLE RAY is a highly enjoyable horror film that seems way ahead of its time, coming as it does in 1936 and making use of meteors and Radium X in its plot design. BORIS KARLOFF is the scientist whose ideas are "stolen", or so he believes, by others and goes about seeking an unusual method of revenge, killing off his intended victims one by one.

FRANK LAWTON and FRANCES DRAKE are the romantic leads with BEULAH BONDI playing an aristocratic Lady Arabella who is one of the victims. But the film is mainly a showcase for BORIS KARLOFF as the mad scientist, with BELA LUGOSI doing extremely well (and underplaying effectively) the role of a colleague among those on the "victim" list.

Universal obviously planned this as a low-budget feature, but the sets are impressive, all the technical credits are more than adequate, and the story is well-paced and effective throughout.

Well worth viewing and certainly one of the better Karloff/Lugosi joint ventures.

Perhaps The Invisible Ray isn't a great film, but there is much to enjoy still. The story is a little predictable, while the supporting characters are underdeveloped and not very interesting and I'm not sure whether some of the scientific ideas, while innovative at the time, are as easy to grasp or as relevant now as it was. These are just personal preferences though, and The Invisible Ray was still enjoyable even with those personal reservations. It is a very nice-looking film, original at the time and holds up now, with a great Gothic atmosphere, beautifully constructed sets and nicely done special effects(even from a present-day perspective). The photography fits with the mood very well as well. The Invisible Ray is atmospherically scored, the script is literate and the film moves quickly with few pacing lulls. The directing from Lambert Hillyer is efficient and neatly set-up, I also detected a little bit of a James Whale influence which I liked. There are some actors who don't really distinguish themselves in roles that don't really allow for them to shine properly. Frances Drake and Violet Kemble-Cooper are good though, while the top-notch performances of genre masters Boris Karloff and Bela Lugosi are the film's best asset. I do prefer their performances and chemistry in The Black Cat, but what really makes them worth watching here is how effortlessly charismatic they are and how they are in roles that actually suit them and their acting skills. In conclusion, very entertaining with great lead performances from Karloff and Lugosi. 7/10 Bethany Cox

While not as famous as some of their other collaborations (such as THE BLACK CAT and THE BODY SNATCHER),this is a dandy little horror film even though the casting decisions were a bit odd. Boris Karloff plays Dr. Janos Rukh, a weird scientist who lives in the Carpathian mountains--near where the Dracula character's home town. Bela Lugosi plays Dr. Benet--whose nationality was never discussed though the name certainly sounds French. I really think it would have made sense to have the two switch roles, as the Carpathian role seems tailor made for Lugosi--especially with his accent. However, despite this unusual twist, the two still did excellent jobs. Karloff's was definitely the lead role, but Lugosi acquitted himself well as a relatively normal person--something he didn't play very often in films!! It seems that Dr. Rukh is a bit of a pariah, as other scientists (especially Benet) think his theories are bizarre and nonsensical. However, over the course of the film, Rukh turns out to be right and Benet is especially generous in his new praise for Rukh. But, unfortunately, the wonderful new element that Rukh discovered has the nasty side effect of turning him into a crazy killing machine (don't you hate it when that happens?). While this could have just been a simple nice scientist turned mad story, the plot was well constructed, the characters nicely developed and the mad Rukh was NOT a one-dimensional killer, but complex and interesting.

This film is bound to be enjoyed by anyone except for people who hate old horror films. You can really tell that Universal Pictures pulled out all the stops and made a bigger-budget film instead of the cheap quickies both Lugosi and Karloff unfortunately gravitated in later years. Good stuff.