The Fifth Floor  The Fifth Floor is a film about a woman while sane gets sent to an asylum. It starred Dianne Hull, Bo Hopkins and Mel Ferrer. The film focuses on Kelly McIntyre, a disco dancer played by Dianne Hull who through no fault of her own, accidentally overdoses on drugs and collapses at a disco. She is misdiagnosed as suicidal and sent to a psychiatric ward which is on the fifth floor of Cedar Springs Hospital. There she finds herself alone with no help, not even from her boyfriend who refuses to get her out of there. She becomes the subject of interest by an unbalanced orderly played by Bo Hopkins. Cathey Paine, who played the part of Leslie Van Houten in "Helter Skelter" (1976), Robert Englund and Michael Berryman who are familiar to horror fans also play parts in the film. Singer Pattie Brooks also makes an appearance in the film as a disco singer.