Mikeneko Holmes no Yuurei Joushu
Japanese title: 三毛猫ホームズの幽霊城主
Alternative titles: Calico Cat Holmes and the Lord of the Haunted Castle
Type: OVA
Source: Novel
Episodes: 1
Status: Finished Airing
Aired: Jul 21, 1992
Duration: 44 min
Rating: PG-13 - Teens 13 or older
Studios: AIC
Genres: Comedy, Drama, Mystery
Themes: Pets

Based on Akagawa Jirou's popular book series about hapless detective Katayama Yoshitaro who lives with his sister Harumi and their cat Holmes, which has a sixth sense when it comes to solve mysteries. 

In this stand alone OVA the aftershow party of Harumi's acting troupe becomes the showplace of murder and tragedy. Luckily Yoshitaro brought Holmes along. 

(Source: AniDB)