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. (Source: MyDramaList) ~~ Adapted from the webtoon "Crime Puzzle" (크라임 퍼즐) by Meen.