This first third of this film is a political thriller/romance that anticipates some of Alfred Hitchcock's work. The second third switches gears to a mad scientist/sci-fi mode, with the requisite flashing lights and bolts of electricity that may have excited audiences in 1931 but may seem cliched and overlong to today's crowd. Then it switches gears again and the final third is basically a commercial for religion. This is great if you believe that what we do in our actual lives doesn't matter because things will be so much nicer after we're dead. Some might say that a work of fiction does not count as evidence of a theory but some people feel differently.
So if this last part reaffirms your beliefs, you're likely to be charmed and delighted. If it doesn't you may feel you're being subjected to a long and unasked-for sermon. But even then you might find it an interesting curiosity, and it's certainly well acted and directed despite moments of overly stage-y dialogue.