David Fincher is an American film director known for dark, psychological thrillers that often explore themes of death, distrust of authority, mental illness, and moral ambiguity. His 1995 film Se7en features these themes through the story of two detectives, Mills and Somerset, tracking a serial killer known as John Doe who uses the seven deadly sins as his motives. The film effectively uses Fincher's signature cinematography, lighting, mise-en-scene, color palette, and editing to set an unsettling tone.