The new series from the duo behind the bestseller "The Killer Inside." Police officer Jin Saeki responds to a report of a burglary at a mansion. However, during his investigation, he comes across such a horrifying video that not only he but also all the other investigators are completely shocked and bewildered. This marks the beginning of an indescribably thrilling crime story filled with passion, lamentation, and bloody madness. For fans of "The Killer Inside," "Monster," "Bungo Stray Dogs," and relentlessly tough crime novels! The series is considered to be ongoing.