In order to find out where the fourth person's fingerprint came from, Kensaka Takataro and Mori Na disguised themselves as journalists and went to the Hokkaido Police Station, intending to access the original files and interview all officers involved in the hall shooting incident.
Unfortunately, the progress was not smooth. Their lack of Kitajima accents quickly gave them away.
The Hokkaido Police Station was quite exclusive and uncooperative, and they were driven away.
The progress of the other investigation teams wasn't very good either. The novelist got side-tracked by sightseeing, and the famous detectives were equally helpless with this old case, only able to wander about hoping for luck.
