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.
Unfortunately the movie Calico Cat Holmes and the Lord of the Haunted Castle is not yet available on HBO Max.
| Visual Effects | Koichi Nakaya | Key Animation |
| Visual Effects | Naoko Ozawa | Key Animation |
| Visual Effects | Masahiro Tanaka | Key Animation |
| Visual Effects | Tatsuya Tomaru | Key Animation |
| Visual Effects | Keiji Gotoh | Key Animation |
| Visual Effects | Masazo Ota | Key Animation |
| Visual Effects | Masashi Yanagishita | Key Animation |
| Visual Effects | Jiro Kanai | Key Animation |
| Visual Effects | Yoshiko Nakajima | Key Animation |
| Visual Effects | Osamu Tanabe | Key Animation |
| Visual Effects | Masahiro Kase | Key Animation |
| Visual Effects | Tomoaki Kado | Key Animation |
| Visual Effects | Fumihide Sai | Key Animation |
| Art | Kenji Kamiyama | Art Direction |
| Directing | Takeshi Aoki | Assistant Director |
| Crew | Jirô Akagawa | Creator |
| Directing | Nobuyuki Kitajima | Director |
| Visual Effects | Noboru Furuse | Animation Director |
| Sound | Kentaro Haneda | Music |
| Writing | Emu Arii | Writer |
| Sound | Fusanobu Fujiyama | Sound Director |
| Visual Effects | Nobuyuki Kitajima | Character Designer |
| Visual Effects | Nobuyuki Kitajima | Animation Director |
| Camera | Kazuhiro Konishi | Director of Photography |
