Saw (2004)

Saw opens up with a couple of guys waking up in a dingy room with no idea how they got there. They're chained to the wall and only have a few random items to clue them into why they're there and how to get out. One of the two happens to know of the serial killer behind it and the story begins as he starts to share all of the details. 

The movie is more about the police investigation to catch Jigsaw than it is about torture porn, which the franchise became known for. There's only a few victims in this first installment: There's a suicidal guy who tried to cut his wrists has to crawl through a razor wire maze, a guy who gets poisoned and burned to death, a drug addict has to cut a key out of a strangers stomach, a cop who gets his throat slashed, a cop who gets blasted by several shotguns, another guy who gets shot and a guy who gets head bashed by a toilet.

Saw is a cool movie through and through that offers way more than blood and gore. There's actually not much of either in this franchise starter. It's more of a mystery than anything else.