"Monks Last Case," the reunion movie, now on Peacock, follows Adrian Monk, a top investigator turned obsessive-compulsive detective. The show's success led to three Emmys for Tony Shalhoub. Monk's unique quirks and brilliant problem-solving marked eight seasons, concluding with a resolution to his wife's murder. The reunion explores Monk's last challenging case amid a pandemic, adding a modern twist to his iconic character.