I must respectfully disagree with MovieBob for once. He just tole me the plot and ending are borrowed from other films And so is the premise which he appears to be unaware of. The premise was taken from Repo! The Genetic Opera. It's a lower budget movie that got short-shifted on an advertising budget. It's based off a stageplay from the 90s and was in production the same time as Repo Men, back when it was Reposession Mamba (the silliest name ever). That too also has a good helping of blood as Darren Bousman, the director os Saw II and III, is the director. It also stars Anthony Stewart Head as the awesome Nathan Wallace/Repo Man. And yes, the premise is exactly the same, with the addition of a drug in a little glass vial. Please check this movie out, it's worth it.