Yoo Hee (Go Ah Sung), a young criminal profiler, is thrust into a complex investigation when her father is murdered. Han Seung Min (Yoon Kye Sang), a forensic psychologist and her former flame, surprisingly confesses to the crime and is imprisoned among dangerous inmates. Convinced that Han Seung Min is not the true killer, Yoo Hee begins her own investigation, sensing hidden motives behind his confession. As violence escalates in the prison and Han Seung Min pursues a mysterious personal agenda, she races against time to uncover the truth about her father's murder. With mounting pressure and dangerous obstacles, Yoo Hee must determine Han Seung Min's real intentions and identify the actual killer before it's too late. Based on a 2015-2016 web-based cartoon series, "Crime Puzzle" is a 2021 South Korean drama series directed by Go Jae Hyun.

Weary homicide detective Yoo Jin Kook (Park Sung Woong) doesn’t have much to look forward to in life besides his younger sister, Yoo Jin Kang (Jung So Min), whom he’s fiercely protective of. While investigating a suspicious death, all signs point to the victim’s boyfriend, Kim Moo Yeong (Seo In Guk), a seemingly charming man with a dark side. But when Moo Yeong starts dating Jin Kang, Jin Kook becomes determined to end their relationship. Can he shield her from the looming threat, or is the real danger closer than he thinks? This 2018 South Korean drama, directed by Yoo Je Won, is a remake of the 2002 Japanese series of the same title.