One Hour Photo (2002). A photo technician who works in a suburban big-box store lives alone with no friends or family outside his career. His favorite costumers are the only ones he knows anything about as he had years of experience developing their personal photos. When he becomes obsessed with one particular family he becomes mentally unstable after finding out the husband is cheating on his wife, a long-time customer he adores and admires. After being fired from his job for indiscrepancies during an audit over hundreds of photos developed and stolen, he seeks his own form of justice as he becomes disillusioned and unhinged.