It was a weird case. All the clues pointed to the dead ghost as the culprit. No one knew that it was to confuse the crowd. Using a gas poisoning case as a medium, there were two people killed.

One was a female police officer who was in charge of the records room at the police station, while the other was a long dead criminal. The condemned man had died before moving into the apartment, and it was terrible how the signs had led him to turn on the gas, a dead man, and to the death of the policewoman. The story slowly became complicated and confusing ...