Ep. 8: Investigators probe acoustic lab clues after classmate's suspicious death

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Superintendent Yakushiji and Assistant Inspector Izumida investigate the recent suicide of a former classmate, which follows the death of a well-known police forensics scientist. Prompted by an unusual tip, they search for clues in an acoustic lab. During their inquiry, they encounter a bitter university professor and discover a new species of ultrasound crickets. The case involves unusual circumstances surrounding the victim's death and requires careful examination of evidence found within the laboratory setting.