Follow the Vanished Diamond! Conan & Heiji vs. Kid!
This OVA is a post-story for The Private Eyes' Requiem.
A mysterious package comes in for Kogoro. Moments later, a diamond thief with a voice similar to Heiji's accidentally calls the Mouri Detective Agency asking for a ransom. Soon realizing that he has dialed the wrong number, the caller hangs up, but not before a familar voice says "Good morning!" on the other line. Conan deducts that the caller had meant to dial a similar number, and calls Heiji over to mimick his voice and call a list of similar numbers. Only one person responds; Yuwatsume. The detectives approach him and question him to discover that the man had paid 10,000,000 yen to retrieve his stolen jewel. After realizing the meager ransom, which was a tenth of the value of the diamond, it is discovered that the returned gem was a fake.
 See also
|Detective Conan OVAs|
|OVAs||Conan vs. Kid vs. Yaiba - The Grand Battle for the Treasure Sword!! • 16 Suspects!? • Conan, Heiji, and the Vanished Boy • Conan, Kid, and the Crystal Mother • The Target is Kogoro!! The Detective Boys' Secret Report • Follow the Vanished Diamond! Conan & Heiji vs. Kid! • A Challenge from Agasa! Agasa vs. Conan and the Detective Boys • The Casebook of Female High-School Detective Sonoko Suzuki • The Stranger from Ten Years Later • Kid in Trap Island • A Secret Order From London • The Miracle of Excalibur|
|Magic Files||Magic File • Magic File 2: Shinichi Kudo, The Case of the Mysterious Wall and the Black Lab • Magic File 3: Shinichi and Ran, Memories of Mahjong Tiles and Tanabata • Magic File 4: The Osaka Okonomiyaki Odyssey • Magic File 5: Niigata~Tokyo Souvenir Capriccio • Magic File 6: Flower of Fantasista|
|Gosho Aoyama's Collection of Short Stories||Wait For Me • The Wandering Red Butterfly • The Santa Claus of Summer • Detective George's Mini-Mini Big Strategy • The Ten Planets in the Night Sky • Play It Again • The Mysterious Murder Plan (The Making of Conan)|
|Detective Conan vs. Wooo||Fatuous Detective!? Kogoro Mouri • Television Personality Maomi Yuki's Worries|
|Detective Conan Movies|
|Movies||Movie 01: The Time-Bombed Skyscraper • Movie 02: The Fourteenth Target • Movie 03: The Last Wizard of the Century • Movie 04: Captured in Her Eyes • Movie 05: Countdown to Heaven • Movie 06: The Phantom of Baker Street • Movie 07: Crossroad in the Ancient Capital • Movie 08: Magician of the Silver Sky • Movie 09: Strategy Above the Depths • Movie 10: The Private Eyes' Requiem • Movie 11: Jolly Roger in the Deep Azure • Movie 12: Full Score of Fear • Movie 13: The Raven Chaser • Movie 14: The Lost Ship in the Sky • Movie 15: Quarter of Silence • Movie 16: The Eleventh Striker • Movie 17: Private Eye in the Distant Sea • Lupin III vs. Detective Conan: The Movie (crossover) • Movie 18: Dimensional Sniper • Movie 19: Sunflowers of Inferno • Movie 20: The Darkest Nightmare • Movie 21: The Crimson Love Letter • Movie 22: Zero the Enforcer • Movie 23: The Fist of Blue Sapphire|
|Related Cases||16 Suspects!? • Conan, Heiji, and the Vanished Boy • Time Travel of the Silver Sky • Follow the Vanished Diamond! Conan & Heiji vs. Kid! • A Challenge from Agasa! Agasa vs. Conan and the Detective Boys • Magic File 2: Shinichi Kudo, The Case of the Mysterious Wall and the Black Lab • Lupin III vs. Detective Conan (crossover) • Magic File 3: Shinichi and Ran, Memories of Mahjong Tiles and Tanabata • Magic File 4: The Osaka Okonomiyaki Odyssey • Magic File 5: Niigata~Tokyo Souvenir Capriccio • Magic File 6: Flower of Fantasista • The Missing Sweets in the Old Shop • The Coded Invitation • Promise with a J-Leaguer • Munch's Missing Scream • The Shadow Approaching Amuro • The Mystery of the Vanished Black Belt • The Melting Cake! • The J League Bodyguard|