Another film by David Fincher, Se7en will keep you on your toes while messing with your mind. Retiring Detective Lieutenant William Somerset (Morgan Freeman) is called back to work after a series of brutal killings strikes his city. For the case, Somerset is paired with younger and idealistic Detective David Mills (Brad Pitt), and the two slowly start to piece together that the killings are inspired by the seven deadly sins, with each murder representing one of the seven sins. As the pair get closer to finding the killer and solving the crimes, an unexpected twist throws a wrench in their entire case.