"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.
Yoo Hee, an aspiring criminal profiler, is thrust into a whirlwind of mystery when her father is murdered in a string of shocking killings. The confessed culprit is Han Seung Min, a renowned forensic psychologist and Yoo Hee's former flame. Doubting his guilt, she investigates and suspects hidden motives. With Han Seung Min in a perilous high-security prison and violence rampant, time ticks away. Yoo Hee races to solve the puzzle before it's too late, unraveling the truth behind her father's death and the enigmatic motives at play.