SolarmovieOne

Ernest P. Worrel tries out a strange contraption he bought cheaply called the Changing Coffin. The machine turns him into his opposite - a mad scientist and supervillain bent on world domination called Dr. Otto. He plans to use his Gloom Beam to render all the computers that keep people’s financial records and bank accounts useless which would make him the only one with access to all this dough. Bumbling hero Lance Sterling and his cautious sidekick Doris are sent to Dr. Otto’s lair to stop him. There, they must face various scary alter egos of Dr. Otto as well as his manservant, Willie the Robot.

How to Watch Dr. Otto and the Riddle of the Gloom Beam Legally and Safely

If you want to stream Dr. Otto and the Riddle of the Gloom Beam through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry Dr. Otto and the Riddle of the Gloom Beam films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.