Ep. 143: Suspicious astronomical observation leads to a fall at the observatory involving a Star Pioneer award winner.
Aired on May 3, 1999Filler

143
Rachel, Serena, and Conan visit an observatory to stargaze, with Serena hoping to spot a shooting star. Rachel’s friend at the facility assists them with a telescope and introduces his senior colleagues. One colleague has recently received the Star Pioneer award. That same night, this award winner falls from the upper level of the observatory. Conan determines the incident is not accidental but must find a way to prove it. The group faces the mystery of how the fall occurred and who might be responsible for the suspicious circumstances surrounding the victim's death at the astronomical site.
Episodes
- Ep. 139 · Conan reveals Minoru as the killer using projector alibi details in the final screening case.
- Ep. 140 · Amy Sends SOS Message While Ill and a Burglar Invades Her Home
- Ep. 141 · Locked Room Murder at the Mansion Before the Wedding
- Ep. 142 · The Night Before the Wedding Locked Room Case Part 2 Investigation Continues
- Ep. 143 · Suspicious astronomical observation leads to a fall at the observatory involving a Star Pioneer award winner.
- Ep. 144 · Conan investigates a murder on the North Star Express resembling a stolen novel.
- Ep. 145 · Yukiko Kudo Acts as Decoy to Expose Toshinori Kaetsu as the Killer
- Ep. 146 · Detective Boys investigate a bank robbery that leads to a murder at the victim's home
- Ep. 147 · Conan uncovers Keizo's elaborate murder scheme involving a fishing line and a hidden knife.