Currently available on 4 streaming services.

Monstrosity - watch online: streaming, buy or rent

Currently you are able to watch "Monstrosity" streaming on Amazon Prime Video, Cultpix, Amazon Prime Video with Ads. It is also possible to buy "Monstrosity" on Amazon Video as download or rent it on Amazon Video online.

Cast

Marjorie Eaton
Hetty March
Frank Gerstle
Dr. Otto Frank
Frank Fowler
Victor
Erika Peters
Nina Rhodes
Judy Bamber
Beatrice "Bea" Mullins
Lisa Lang
Anita Gonzalez
Margie Fisco
The Walking Corpse (uncredited)
Bradford Dillman
Narrator (voice; uncredited)