Episode 4 - S1.E4

Unable to arrest Nakamura (Tetsuya Bessho) due to the statute of limitations, Takeda (Kinya Kitaoji), exhausted physically and mentally, returns home with the support of Murai (Yasuko Tomita). There they find a picture postcard. It was posted by the murdered Sawako (Juri Ueno), and was postmarked five days after Sawako was thought to have been murdered. It was a trick that Nakamura did to delay the discovery of the incident, but the two of them boarded Nakamura's apartment again with a strategy to take advantage of it.