Spider Baby or, The Maddest Story Ever Told (1968)

Spider Baby or, The Maddest Story Ever Told (1968)

Spider Baby is a 1964 black comedy horror film, written and directed by Jack Hill. It stars Lon Chaney, Jr. as Bruno, the chauffeur and caretaker of three orphaned siblings who suffer from "Merrye Syndrome", which causes them to mentally, socially, and physically regress backwards down the evolutionary ladder starting in early puberty.

The film was shot between August and September 1964. However, due to original producer's bankruptcy, the film was not released until January 18, 1968. Spider Baby suffered from poor marketing as well as a series of title changes, being billed alternatively as The Liver Eaters, Attack of the Liver Eaters, Cannibal Orgy, and The Maddest Story Ever Told. (wikipedia)

Syvälle salattu aka Body of Water (2011 Finland)

Body of Water (2011 Finland)
Syvälle salattu

Julia is a young lawyer who has been in conflict with her father for a long time.
Her mother seems a bit insane, and Julia thinks that he is partially responsible
for this. She has also split with the father of her son and tries to escape all
these concerns by working hard. On a new case, she is brought back to the house
near the lake where she was raised to help a group of environmentalists to protect
its natural beauty against the industrial project of a power company. But by doing
so she has to fight the greed of the locals, and their trust in an evil spirit that
is believed to be attached to the lake.

Nudist Colony of the Dead (1991)

Nudist Colony of the Dead (1991)

Judge Rhinehole orders the Sunny Buttocks Nudist Camp closed down as
an affront to the community. The members of the camp enter into a
suicide pact, but vow to return for vengeance. Five years later, a
group of campers on a retreat argue with each other about religion
and sing big production numbers as the group begins experiencing
an attrition problem.  (IMDB)