There were a couple of low budget movies in the 1970s or '80s about cannibal families or couples who appeared to be ordinary middle class people to the general public, but always maintained a large walk in freezer full of human meat. Those were gruesome, and sometimes scary. Not sure if it was one movie or two that I'm remembering. One scene was where they'd cut their victims' tongues out, tie them up, and bury them in the garden, only exposing their heads, as if a row of cabbage heads.
