Terror from Under the House (1974)

This dark drama unfolds in an unnamed community outside of London, where a beleaguered and grief-stricken tavern owner named Jim Radford (James Booth copes with the rape and murder of his young daughter. The remainder of his family shares his distress, and in time, it begins to rip the clan apart. When the young man who is being tried for the crime is let off thanks to paltry connecting evidence, Jim grows desperate and teams up a buddy of his named Harry (Ray Barrett) whose daughter suffered from a like fate - presumably, though not definitively, at the hands of the same killer. The two hone in on the young man who they believe is responsible, kidnap him and torture him in a number of ways. Unfortunately, the youth will not talk and ends up dead. Moreover, in time it becomes apparent that this might not have been the correct individual.