"I remember how surprised I was when I first saw this case.
Everyone involved was lying, for one reason or another."

On February 5, 2012, the police were notified of a little girl by the name of Seowon going missing from a nearby playground. Even after an extensive investigation that involved questioning all persons of interest, the police were never able to solve the case.

Twelve years on, Jeon Gyeong, a retired police detective who was on Seowon’s case, was paid a visit by a young police officer who pleaded with her to revisit the case. As Jeon Gyeong retraces the past and more old memories are recovered, a shocking revelation becomes clear: everyone connected to Seowon’s case was lying.

Following on from Replica, Legal Dungeon, and The Wake, Somi introduces us to his latest adventure titled No Case Should Remain Unsolved, a riveting text-based mystery told through unique and unconventional mechanics.

Relying only on her scattered memories of the long-forgotten case, help former police detective Jeon Gyeong uncover, rearrange, and piece together fragments and clues to shine light on what really happened when Seowon disappeared from a playground twelve long years ago.

Dive into an engaging story that gradually falls into place through careful and imaginative deductions. Who said what and when? With each piece of the puzzle, the truth behind Seowon’s disappearance twelve years ago comes to light.