THE INVISIBLE RAY, the third Universal teaming of Boris Karloff and Bela Lugosi , is probably the least discussed of their seven films together. And I don’t quite know why, because I find it an entertaining meld of horror and science fiction that holds my interest for its 80 minute running time. The two stars are well spotlighted, with Bela as one of the good guys (for a change!) and Boris giving a hammy but well crafted performance as a scientist unhinged by his newest discovery.

A curly-haired Karloff stars as Dr. Janos Rukh, awaiting the arrival of a group of his fellow scientists for a demonstration of his Invisible Ray as a storm rages outside. Rukh’s wife Diana and blind Mother Rukh greet them: Sir Francis Stevens and his wife Lady Arabella, French astro-chemist Dr. Felix Benet, and Lady Arabella’s nephew Ronald Drake, who’s along for the ride. Rukh…