10 Sci-Fi & Fantasy Films That Were Much Too Depressing For The Masses

5. Never Let Me Go (2010)

Based on Kazuo Ishiguro's dystopian science-fiction novel, Never Let Me Go centres on three young adults, Kathy (Carey Mulligan), Tommy (Andrew Garfield) and Ruth (Keira Knightley), clones bred as organ donors for the rich. Early in the film, as children, Kathy, Tommy and Ruth are informed that they will die in early adulthood. Which is devastating enough, but what's worse is that the three friends are helpless innocents raised in sheltered surroundings from birth, eventually forming a short-lived and poisonous love triangle. Kathy is in love with childhood sweetheart Tommy her entire short life, but Ruth through jealousy traps Tommy in a manipulative relationship. Ten years after they parted ways, as Kathy reunites with the now-separated Ruth and Tommy, she finds two frail versions of her former companions, each of them already a few "donations" in. When Ruth dies after her liver is removed, Tommy and Kathy finally get their chance to begin the relationship they were denied for so long. Tommy then expires in his next operation of course, and the film ends as Kathy explains in voiceover that she is to begin her own donations shortly. It's an incredibly sad film from mournful start to dispiriting finish, but if you think you would relish the sight of Keira Knightley and Spider-Man getting progressively sicker as their precious organs are harvested so more privileged people can live for longer, then Never Let Me Go is the film for you.