This is a first-person, PC-based 3D puzzle game. The player assumes the role of a nobleman in the context of an overhead historical era. On the way to being released as an official, solve the story of a bizarre murder case. This game combines online puzzle games, offline script killing, escape room and other gameplay, allowing players to experience the fun of detective and trial more deeply. This game involves a lot of logical gameplay in terms of clue association, which is more hardcore. Players who love hardcore reasoning are welcome to come and taste it.