Please don't drown in this river File 2 (S01E09)

The lifeless body of journalist Ryota Ishiguro is discovered along the riverbank. Although he drowned, his body is strangely dry. As Reiko delves deeper into the investigation, she uncovers a connection to Shiho and Satoshi Kambara, a devoted couple from whom Ishiguro had been extorting money. They maintain they have an alibi. However, things take a surprising turn when a silver spoon engraved with "Shiho to Leo" is found, shifting the focus of the case entirely.