"House on the Edge of the Park" is a pretty enjoyable 'rape/revenge' piece and a great example of the awesomeness that is David "The Psycho Rapist" Hess. He certainly carved out a nice little 'niche' back in the glory days of 'exploitation'...
Hess plays a sleazy rapist mechanic who is invited along to a party of rich kids who stopped in to have their car fixed. Shit takes a turn for the worse when Hess gets annoyed by the hot, short-haired cock-tease leading him on constantly, their condescending attitude toward his slightly retarded and sympathetic buddy and the shifty poker game they end up playing. As you would expect, people are tied up, beaten, fucked, cut up and just all-around humiliated by the gleeful creep.
Ruggero Deodato (Cannibal Holocaust, Cut & Run) made an enjoyable 'exploitation' flick here, though I feel it was a little 'light' on the rough stuff when it came to the violence. Still, you get plenty of nudity, razor-on-titty slashing, a bald black chick with surprisingly ample breasts and Hess being a fucking crazed animal with a lust for sadism and sexual torment. He's what carried this flick. Plus, his slow-motion scream at the end when he gets his twig and berries obliterated was priceless!
If you dig the 'rape/revenge' genre than "House on the Edge of the Park" is some necessary viewing, but not the strongest when it comes to the element of 'sleaze'.