The House on the Edge of the Park is a 1980 exploitation film, made to ride the coattails of Wes Craven's Last House on the Left. It stars David Hess (also of Last House on the Left), Christian Borromeo, Annie Belle, and Giovanni Lombardo Radice.
Alex (Hess) opens the movie by raping and murdering a woman, and subsequently he and his buddy Ricky (Rapice) fix a car for a rich couple (Belle and Borromeo) and get invited to a party. The "party" gets badly out of hand - the rich folks humiliate Ricky a bit and cheat at cards, whereupon Alex flips out, takes five people hostage with a straight razor (what), and spends the rest of the movie raping and terrorizing people.
At the end, it was all a setup! Tom, the guy who was driving the car, lured Alex and Ricky there because the girl Alex raped was Tom's sister, and he just wanted and excuse to shoot and kill him. Despite having multiple opportunities to grab the gun, he doesn't do it until Alex has been slicing a girl up with a razor, while everyone stands and watches. Exploitation film, man. Not a genre I think we need to spend a lot of time revisiting. But Alex does get shot in the end, so that's good.
My Grade: F
Rewatch value: IINSIAIFWT
Next up: How the Grinch Stole Christmas