10 Mind-Bending Thrillers That Will Melt Your Brain

8. Source Code

Duncan Jones delivered a one-two punch with the irresistible sci-fi Moon, followed up by his unforgettable existential thriller Source Code.

The narrative revolves around a U.S. helicopter pilot named Captain Colter Stevens (Jake Gyllenhaal), who last remembers being in Afghanistan and wakes up in a mysterious room, being tasked with operating a propretary military tech called "Source Code", which allows the user to enter into the last 8 minutes of someone's life via an alternate timeline. Stevens enters the life of Sean Fentress, a man aboard a train that explodes.

His task? Find the bomber so that he can then report the identity back to his superior officers (Vera Farmiga and Jeffrey Wright), but things get dicier when a) Stevens incredulously falls in love with the friend of the man whose body he is inhabiting (Michelle Monaghan), and b) he discovers that he essentially died in Afghanistan, and his current experience is just his brain on life support.

The movie ends with Stevens managing to exist in an alternate timeline, which is even more mind-blowing when you realise that he's still impersonating Sean Fentress while living happily ever after with Monaghan's character. Woah.