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After her doctors declare her ready to return to society, Ethel leaves the psychiatric hospital and goes to live with her grandmother. She soon develops a few odd habits, in particular a insatiable compulsion to eat massive amounts of food. When grandma locks away the food supply out of fear for her granddaughter's health, Ethel kills her for the keys to the pantry. Left to her own devices, she now indulges her hunger non-stop, murdering anyone who dares to stand in her way. Will anyone be able to put a stop to her?

How to Watch Criminally Insane Legally and Safely

If you want to stream Criminally Insane 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 Criminally Insane 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.