Parents need to know that Devil's Workshop is a horror movie with comic touches about a struggling actor who researches a potential movie role by spending a weekend with a demonologist. Expect extremely strong language, including constant use of "f--k," "c--ksucker," the "N" word, and more. Violence is also intense, with blood rituals, branding, knives, fighting, face-peeling, someone being threatened with a broken bottle, arguing, yelling, screaming, violent dialogue, and more. A male character's naked bottom is shown as is, briefly, his penis. A woman sits on top of him, suggesting sex. Sex noises are heard through a wall, and there are a few brief suggestive shots and sex-related dialogue. Characters play a drinking game, drinking several shots, and there are several scenes of pot smoking, plus vaping, cigarette smoking, and beer drinking.