Beyond Evil

Beyond Evil (괴물) centers on the quiet rural town of Manyang in Gyeonggi Province, which was torn apart twenty years prior by an unsolved cold case involving serial murders and the disappearance of Lee Yu-yeon. Lee Dong-sik (Shin Ha-kyun), Yu-yeon’s twin brother and a former star Seoul detective who was once the prime suspect, now serves as an assistant inspector at the humble Manyang Police Substation. Broken by grief and viewed with lingering suspicion by his neighbors, Dong-sik lives a solitary existence obsessed with finding his sister's remains.

The status quo is shattered when Han Joo-won (Yeo Jin-goo), an elite, hyper-rigid young detective and son of the candidate for National Police Agency Commissioner, transfers to Manyang. Joo-won harbors a hidden agenda, suspecting Dong-sik of being the serial killer. When a new murder occurs mirroring the twenty-year-old cold case—with severed fingertips left behind—the hostile partners are forced into an uneasy alliance.

As their investigation unfolds across sixteen episodes, the narrative transforms from a traditional "whodunit" into an intricate psychological study. Dong-sik and Joo-won uncover a dense web of local secrets, municipal real-estate corruption, police leadership cover-ups, and shared guilt, forcing both men to confront the monsters within themselves and their institution.

The central core of Beyond Evil is captured in its original Korean title, Goemul (怪物), which translates to "Monster". Through its complete story arc, the creators ask a profound question: "Who is the monster? Is it you, is it me, or is it us?"

The series demonstrates that monsters are not merely born as isolated psychopaths like serial killer Kang Jin-mook. Rather, monstrousness is bred and sustained by institutional self-preservation, political ambition, real-estate greed, and a community's willingness to look away from evil for comfort or progress. Beyond solving a murder mystery, the creators focus heavily on the enduring psychological trauma of victims' families. True justice requires confronting systemic corruption, acknowledging personal guilt, and breaking the cycle of silence—even when it destroys one's own status or family legacy.

The Psychological Dualism Reading: Dong-sik and Joo-won represent two halves of a single fragmented psyche restoring balance. Dong-sik represents emotional grief and chaos, while Joo-won represents intellect, order, and law. Only by combining their perspectives can justice be achieved.

Released in early 2021, Beyond Evil emerged during a golden era of South Korean cable psychological thrillers. It addressed a real-world legal issue in South Korea: missing adult cases are often categorized by law enforcement as "voluntary runaways," preventing official police searches. Shin Ha-kyun specifically highlighted in interviews that he took the role to shed light on missing adults and the forgotten pain of their families.

The series established a gold standard for K-drama thriller writing, praised internationally for avoiding plot holes and makjang tropes. It cemented Shin Ha-kyun's legendary acting status and proved Yeo Jin-goo’s capability in intense, adult dramatic roles.

Praise: Universally lauded for Shin Ha-kyun and Yeo Jin-goo’s acting synergy, Kim Su-jin’s airtight, plot-hole-free screenplay, and Sim Na-yeon’s atmospheric direction. The OST and cinematography were widely commended.

Criticism: Some viewers noted that the first 3-4 episodes were slow-burning and confusing due to Dong-sik’s erratic behavior. Others felt the mid-series transition from a serial killer mystery to political redevelopment corruption slightly altered the show's initial visceral tone.

Overall Verdict: Regarded by critics and audiences as a masterpiece of Korean television, winning Best Drama at the Baeksang Arts Awards and maintaining high user ratings globally.