Rock star Roddy Usher is confined to an insane asylum after murdering his wife. There, he is given various shock treatments by Nurse Smith and Dr Calahari, resulting in a series of bizarre and nightmarish adventures.
| Actor | Role |
|---|---|
| JJames JohnstonRoderick Usher / Gory the Gorilla | Roderick Usher / Gory the Gorilla |
| LLisi TribbleMadeline Usher / Masked Mary / Mummy / Dr. Wells | Madeline Usher / Masked Mary / Mummy / Dr. Wells |
 Ken RussellDr. Calahari | Dr. Calahari |
| MMarie FindleyNurse ABC Smith / Dream Woman | Nurse ABC Smith / Dream Woman |
 Lesley NunnerleyBerenice | Berenice |
| EEmma MillionsAnnabelle Lee | Annabelle Lee |
| PPete MastinErnest Valdemar | Ernest Valdemar |
| SSandra ScottBeulah Von Birmingham | Beulah Von Birmingham |
| BBarry LoweDr. Glynn/Gory the Gorilla | Dr. Glynn/Gory the Gorilla |
| AAlex RussellIgor/Gory the Gorilla | Igor/Gory the Gorilla |
| RRoger WilkesGory the Gorilla | Gory the Gorilla |
| CClaire CannawayYoung Lenore Usher | Young Lenore Usher |
| SSam KitcherYoung Allan Usher | Young Allan Usher |
| SSuki UrumaScrew | Screw |
| JJackie LoweLunatic | Lunatic |
| AAnn ThomasLunatic | Lunatic |
| NNeil BrookesLunatic | Lunatic |
| LLeonie BrookesLunatic | Lunatic |
| LLeahLunatic | Lunatic |
| NNipperBlack Dog | Black Dog |
| KKatharine BlakeUnholy Reveller | Unholy Reveller |