Ep. 50: Conan and the Detective Boys investigate a librarian's disappearance and hidden narcotics in the library.
Aired on March 3, 1997

50
After noticing police searching for a missing librarian, Conan and the Detective Boys sneak into the library at night. They observe director Tsugawa Shuji packing imported books and boasting about hiding the victim's body. The children search for remaining items and discover fake books with no spines containing narcotics packets. They deduce the body is in the elevator and manually open the door to reveal the corpse of Tamada Kazuo. Tsugawa Shuji is also present inside. After narrowly escaping him, the group sets a trap that successfully knocks him unconscious.
Episodes
- Ep. 46 · Murder at a Snowy Mountain Alpine Hut Involving Skiing Students
- Ep. 47 · Saijo Naoya's apparent drowning at the sports club is revealed to be a murder involving a brick and dimmed lights.
- Ep. 48 · Hattori Heiji investigates a locked room murder involving diplomat Tsujimura Isao while Conan suffers from a worsening cold.
- Ep. 49 · Diplomat Murder Case Part Two Resolution and Aftermath
- Ep. 50 · Conan and the Detective Boys investigate a librarian's disappearance and hidden narcotics in the library.
- Ep. 51 · Murder at the Golf Driving Range Involving a Bomb in a Club
- Ep. 52 · The Mist Goblin Legend Murder Case
- Ep. 53 · Conan and friends investigate a murder involving a potted plant and a wounded bird.
- Ep. 54 · Investigation into a murder disguised as an explosion at a video game launch party