"Crime Puzzle" is a story where a criminal psychologist is sent to prison for murdering a political candidate, and the criminal profiler who loses her father to the murder is conducting interviews with the murderer for a case that occurs within the prison. These two used to be lovers just a year ago, until they meet again as a murderer and a criminal profiler, and face the unexpected truth to a series of murders. The thriller focuses on the process of them putting the pieces together, like a puzzle. Adapted from the webtoon "Crime Puzzle" (크라임 퍼즐) by Meen.