Dr. Stephens (Michael Harvey), head of a seriously understaffed institute for the insane, takes a 'progressive' approach towards the treatment of his patients, even allowing his loonies complete freedom of the building, day and night; he pays the price for his forward thinking, however, when he rather stupidly prescribes chopping wood with an axe as therapy for one of his patients and consequently gets his neck mistaken for a log (serves him right for not suggesting basket weaving).
Shortly after this tragic incident, nurse Charlotte Beale (Rosie Holotik) arrives at the hospital to take up position as the doctor's assistant, and discovers that the facility is now being run by the much sterner Dr. Geraldine Masters (Annabelle Weenick). Despite being unaware of her deceased predecessor's decision to employ Ms Beale, and not particularly eager to take on new staff, Dr. Masters agrees to let the pretty nurse begin work, but following several harrowing experiences at the hospital, Charlotte begins to wonder whether it might have been better if she had been turned away.
It doesn't take a genius to figure out what is actually happening at the hospital, the 'lunatics have taken over the asylum' schtick being a premise that should be familiar to most seasoned horror fans, but S.F. Brownrigg's Don't Look In The Basement still proves to be an entertaining piece of drive-in fun thanks to its well defined collection of nutters: lobotomised, popsicle-sucking Sam (Bill McGhee); Judge Oliver W. Cameron (Gene Ross), who continuously mumbles courtroom phrases; old Mrs. Callingham (Rhea MacAdams), who recites William Allingham's creepy poem The Fairies and warns Charlotte of impending doom; cackling loon Danny (Jessie Kirby), who delights in teasing the other patients; Harriet (Camilla Carr), who thinks her doll is a real baby; army nut Sergeant Jaffee (Hugh Feagin); and best of all, Allyson King (Betty Chandler), whose rejection by a series of men has left her with a craving for love (ie., she tries to jump any man who goes near her).
This convincingly crazy set of characters, plus a bit of gore and nudity, reasonable direction from Brownrigg (who also gave us the impressive white trash horror Scum of the Earth), and a solid turn from Playboy covergirl Holotik, all go to turn an otherwise rather predictable, low budget piece of exploitation into a very watchable psycho shocker.