What's the Matter with Helen?

teens

1930s, 20th century, 30s, atmospheric, california, choir, corpse, dance school, danger, dead body, death, detective, evil child, father daughter relationship, feminism, grindhouse, hagsploitation, hollywood, iowa, lesbian, los angeles, memory loss, mental disorder, murder, phobia, police, psychological, psychopath, queer horror, revenge, scary, serious, shock, singing, slasher, suspense, tap dancer, tense, usa, violence, woman in danger, yacht, year 1971

United States