Young Kindaichi's Casebook: Deep Blue Massacre is an anime film that premiered in summer 1999, produced by Toei Animation.

About the production: the story comes from a light novel, the film runs about 90 minutes and its current status is "finished".

Its main genres are mystery, with themes such as Detective.

On AniList, Young Kindaichi's Casebook: Deep Blue Massacre has an average score of 63%, an average score, and appears on 907 users' lists.

Kindaichi, Miyuki and Fumi are invited to the resort of the Deep Blue Island by their senpai Akane, the daughter of the president of the Aizawa Group. A group of criminals infiltrate the hotel diguised as waiters to kill the members of the Aizawa Group. The criminals don't know their boss in person, and they don't know either that he's in the hotel with the members of the Aizawa Group. Note: The movie is an alternative version to the "Satsuriku no Deep Blue" arc of the 1997 Kindaichi TV series.

Official synopsis from AniList.