Crucible of Horror

Starring Michael Gough, Yvonne Mitchell, Sharon Gurney
1970, Color, Unrated

The patriarch of a British family seems to take delight in physically and psychologically torturing his wife and daughter while revering his son, who shares in abusing his mother and sister. Finally fed up with the abuse, the mother and daughter plot to do away with the father to end their suffering. After it appears their plan is successful, the mother and daughter must deal with the disappearance of the body and its random appearance in the strangest places and at the most inopportune times.