2016
16 eps
tvN
Crime Thriller Mystery
A criminal profiler communicates with a detective from the past via a mysterious walkie-talkie to solve cold cases.
If you loved Unforgotten's mismatched detective duo whose chemistry carries the entire show, Signal delivers exactly that. The emotional territory — cold cases and justice — is the same. The pacing is emotionally heavy — you'll need to sit with it after.
2026
8 eps
Netflix
Crime Mystery Thriller
A Korean-American woman builds an elaborate false identity as a high-society luxury brand executive, targeting the ultra-wealthy elite of Seoul. When her fabricated persona — and t…
If you loved Unforgotten's slow build where every stolen glance and almost-moment pays off, The Art of Sarah delivers exactly that. At its core, it's about the pursuit of justice in a system that was never built for it. The pacing is a slow-burn dread that accumulates until the weight of it is unbearable.
2022
16 eps
KBS2
Crime Thriller Mystery
Detectives Oh Joo-hyun and Kang Do-chang return for a second season, this time investigating a sensational murder case tied to a powerful political figure and a media empire willin…
If you loved Unforgotten's mismatched detective duo whose chemistry carries the entire show, The Good Detective 2 delivers exactly that. At its core, it's about the pursuit of justice in a system that was never built for it. The pacing is a slow-burn dread that accumulates until the weight of it is unbearable.
2025
10 eps
Netflix
Crime Thriller Mystery
A disgraced former detective with a traumatic past becomes the unlikely investigator when a string of high-profile murders of powerful corrupt men seems to serve a brutal, poetic j…
Both are built around the pursuit of justice in a system that was never built for it. The pacing is a slow-burn dread that accumulates until the weight of it is unbearable.
2024
12 eps
OCN
Thriller Mystery Drama
A cold case detective and a forensic psychologist are brought together by a series of murders that mirror a case from their shared traumatic past, forcing them to confront buried m…
Like Unforgotten, it leans hard into cold case. At its core, it's about the pursuit of justice in a system that was never built for it. The pacing is emotionally heavy — you'll need to sit with it after.
2024
12 eps
MBC
Thriller Melodrama Crime
A former professor destroyed by the death of her son at the hands of a drunk driver plots elaborate revenge against the man who walked free. The man's son — now a police detective …
If you loved Unforgotten's slow build where every stolen glance and almost-moment pays off, Wonderful World delivers exactly that. At its core, it's about the pursuit of justice in a system that was never built for it. The pacing is emotionally heavy — you'll need to sit with it after.
2023
28 eps
Youku
Crime Thriller Mystery
A detective becomes obsessed with two unsolved cases separated by a decade — a serial killer who was never caught and a case that destroyed his partner. Under the Skin is a Chinese…
Like Unforgotten, it leans hard into cold case. The pacing is a slow-burn dread that accumulates until the weight of it is unbearable.
2025
8 eps
Disney+
Thriller Mystery Drama
A journalist investigating a cold case involving a prominent politician's family disappears. Her younger sister, a civil servant with no investigative experience, starts pulling on…
Both are built around the pursuit of justice in a system that was never built for it. The pacing is a slow-burn dread that accumulates until the weight of it is unbearable.
2025
16 eps
SBS
Thriller Drama Mystery
An investigative journalist known for exposing corporate corruption discovers that her latest target — a pharmaceutical empire hiding fatal drug trial data — is connected to her ow…
If you loved Unforgotten's slow build where every stolen glance and almost-moment pays off, Unmasked delivers exactly that. At its core, it's about the pursuit of justice in a system that was never built for it. The pacing is a slow-burn dread that accumulates until the weight of it is unbearable.
2022
16 eps
tvN
Crime Thriller Mystery
Twin brothers — a crime novelist and a prosecutor — separately infiltrate the same powerful chaebol family to find the evidence that will prove their stepfather was framed for murd…
Both are built around the pursuit of justice in a system that was never built for it. The pacing is a slow-burn dread that accumulates until the weight of it is unbearable.