No Mercy

After her younger sister disappears, In-ae refuses to wait for official answers. She digs into the sister's recent days and discovers she endured severe bullying and sexual abuse at school. Refusing to accept inaction, In-ae sets out to mete out her own form of justice, tracing the people and places connected to the tragedy. The investigation pulls her into a web of fear, power, and trauma, testing her resolve and forcing hard choices. As she closes in on the truth, the line between protector and aggressor starts to blur, and the consequences touch more than just the people involved. The story unfolds with relentless tension and a stark look at vengeance, guilt, and resilience. The tension tightens as night falls.

Directed by Lim Kyoung-tak, this film comes from an original screenplay rather than a literary adaptation and hit screens in 2019. The cast centers on Lee Si-young as In-ae, with Park Se-wan, Lee Jun-hyuk and Choi Jin-ho in supporting roles.

Box office details for No Mercy are not widely published, and no reliable worldwide gross is readily available. The film did not become a major international blockbuster, though it drew attention within its Korean audience and a modest streaming footprint.

No major awards or nominations are listed for No Mercy. The film has been noted for its intense performances and raw themes, but it did not secure prominent critical trophies. Critics highlighted the lead portrayal and the film's unflinching look at abuse. Its reception mainly praises the performances and realism.

Critics generally acknowledge the film's relentless pace and stark treatment of trauma and vengeance. It centers on a determined sister figure who challenges a broken system, raising questions about justice, accountability, and the cost of taking matters into your own hands. The film invites discussions about accountability and healing publicly.