Because the wine cellar was only accessible to those at the party, all 16 people present—including Shiratori himself and major characters like Conan, Ran, Kogoro, Heiji, and Kazuha—are considered suspects.

(originally released in 2002) is a single-episode original video animation that is not officially divided into multiple parts or episodes. It features a large ensemble cast gathered at Inspector Shiratori's newly completed villa in Karuizawa for a party. Plot Summary

The OVA includes a wide range of the series' cast, including the Detective Boys, Professor Agasa, Haibara, and even police officers like Sato, Takagi, and Megure.

The "case" in this OVA is a lighter, non-murder mystery revolving around a smashed bottle of Inspector Shiratori's most prized and expensive wine.

Heiji Hattori and Conan Edogawa team up to find the culprit. Heiji initially deduces that a mouse may have caused the bottle to fall.

* 24 Mar 2002. Japan. ... * 24 Mar 2002. TV. 25 mins More at TMDB. Letterboxd 16 Suspects!? - Detective Conan Wiki

This OVA provides background details, such as the fact that Genta Kojima's family owns a liquor store, "Kojima Liquors". Runtime: Approximately 26 minutes. Detective Conan OVA 02: 16 Suspects (2002) - Letterboxd