If you ever get a chance to see this film on TCM or Netflix, then by all means give it a chance. You might find it as entertaining in a low camp sort of way as I did. Its writer-director Samuel Fuller was known for making low-budget films with controversial themes, and the film is described as a thriller, but I found it (presumably) inadvertently funny. The acting is way, way over the top, and the plot is crazier than the patients depicted in the film's mental hospital. The recurring voiced thoughts of our journalistic hero, feigning mental illness and "working" undercover, so to speak, in the mental hospital to solve a murder committed in the hospital and achieve acclaim, are comically histrionic. I cannot believe the serious-minded and socially-conscious Fuller set out to make a satire, or expose the treatment of the mentally ill, or explicitly parade their delusions and idiosyncrasies for our amusement; instead, to this viewer, the film is less a thriller and more a kind of low camp amusement.
How else are we interpret the crazy scene where our hero searching for clues to the murder ends up in the "nympho" ward where they interrupt their art therapy to attack him amid his ferocious screams (and we see on the walls the results of their art therapy: pictures of naked men). On the other hand, one of the attendants is taking sexual advantage of "feeble-minded women" in the kitchen. And our hero's girlfriend expresses her anxieties that if he solves the crime he'll emerge from the hospital reasonably sane, but if he doesn't solve it, he'll descend to a permanent "depressive psychosis" (or was it "catatonic schizophrenia", they seem to mix the diagnostic disorders in this film frequently). Oh, what our ambition will make us do!
How else are we interpret the crazy scene where our hero searching for clues to the murder ends up in the "nympho" ward where they interrupt their art therapy to attack him amid his ferocious screams (and we see on the walls the results of their art therapy: pictures of naked men). On the other hand, one of the attendants is taking sexual advantage of "feeble-minded women" in the kitchen. And our hero's girlfriend expresses her anxieties that if he solves the crime he'll emerge from the hospital reasonably sane, but if he doesn't solve it, he'll descend to a permanent "depressive psychosis" (or was it "catatonic schizophrenia", they seem to mix the diagnostic disorders in this film frequently). Oh, what our ambition will make us do!