The Perfect Insider

On a secluded island research complex, brilliant programmer Shiki Magata has spent years in near-total isolation, keeping the outside world at a distance. When associate professor Souhei Saikawa arrives with university student Moe Nishinosono to meet the elusive recluse, their visit is abruptly derailed by a killing that appears to be impossible—a locked-room murder inside the tightly controlled facility.

With the island cut off and the evidence pointing in unsettling directions, Saikawa and Moe are drawn into a tense investigation where appearances mislead and buried secrets surface. Untangling the mechanics of the crime forces them closer to the truth behind Magata’s carefully guarded history.