Case Closed: Season 1, Episode 223
1 - 223: And There Were No Mermaids (The Deduction)
Conan and Heiji investigate Naoko's brutal murder and discover a trail of fish scales that suggest Naoko's killer came from the sea.
Conan and Heiji investigate Naoko's brutal murder and discover a trail of fish scales that suggest Naoko's killer came from the sea.