Forced Entry (1974)

Note: Everywhere I look the release date of this movie is different. IMDB has it as 1973. Wikipedia has it as 1972. My date comes directly off of the After Hours Cinema website.

Writer/Director: Shaun Costello
Star: Harry Reems

Harry Reems plays a no-named Vietnam Vet/rapist/serial killer with PTSD and suffers from flashbacks. Along with that comes his need to make up enemies and kill them as a way to deal with the pain. So, he uses his job at the local gas station to get girls' addresses. Once he gets their info it's on to the stalking, raping and finally the slashing. He uses the old "We don't take cash here, I need a credit card along with your address for verification" bit... amateur. (read more)