Ep. 177: Conan reveals the purple handkerchief clue to Haibara during a film-themed party investigation.
Aired on January 24, 2000

177
Conan informs Haibara that the purple handkerchief narrows the suspect list at a party for the film "The Rainbow Handkerchief," identifying Pisco as a target. After guests flee in panic, Pisco knocks Haibara unconscious, trapping her in a locked wine storage room. Conan contacts her via device, stating police have detained seven suspects to buy her time. He instructs her to drink wine, which, combined with her cold, will counteract APTX 4869 and revert her to Shiho Miyano. Meanwhile, Gin and Vodka arrive at the hotel and proceed toward the storage room where Haibara is held captive.
Episodes
- Ep. 173 · Bloody marks lead to the killer using a coin to mimic fireworks and a special airport code.
- Ep. 174 · The 20 Year Old Murder Case: The Symphony Serial Murders
- Ep. 175 · Richard investigates a murder case involving four suspects who all struck the victim.
- Ep. 176 · Haibara and Conan spy on Gin's car to track Pisco at Haido Hotel
- Ep. 177 · Conan reveals the purple handkerchief clue to Haibara during a film-themed party investigation.
- Ep. 178 · Haibara and Conan face the Black Organization members Gin, Vodka, and Pisco during a deadly confrontation.
- Ep. 179 · A coffee shop truck crash reveals a calculated murder plot involving a staged accident and specific evidence.
- Ep. 180 · Kogoro investigates a stalker at a party where a blackout leads to a mysterious escape and a fatal chandelier accident.
- Ep. 181 · Conan reveals the culprit behind the statue murder and gives Ran flowers