RetroMovieDrone72

Demons of the Mind ~ (1972) ~ Horror, Thriller. Director: Peter Sykes. Production: Hammer Films. A physician discovers that two children are being kept virtually imprisoned in their house by their father. He investigates, and discovers a web of sex, incest, and Satanic possession. IMDB: https://www.imdb.com/title/tt0066982/?ref_=nv_sr_srsg_0

Blue Sunshine ~ (1977) ~ Horror, Thriller Director: Jeff Lieberman A bizarre series of murders begins in Los Angeles, where people start going bald and then become homicidal maniacs. But could the blame rest on a particularly dangerous form of LSD called Blue Sunshine the murderers took ten years before? IMDB: https://www.imdb.com/title/tt0074226/

Picnic at Hanging Rock ~ Director's Cut ~ Drama, Mystery ~ (1975) Director: Peter Weir. During a rural summer picnic, a few students and a teacher from an Australian girls' school vanish without a trace. Their absence frustrates and haunts the people left behind. IMDB: https://www.imdb.com/title/tt0073540/?ref_=fn_al_tt_1