I know Ghost Jail Mansion Murder Case only featured in written format like the novel cases, but it didn't release under the novel series. The case was included in the small booklet of the soundtrack, and in order to solve the case, readers need to listen to the songs, so I will say it's more like a short quiz or puzzle.
Unfortunately, I don't have any file of this case. However, someone has translated it to Chinese years ago, and it can be found online. I don't know if you are familiar with Chinese language, so I didn't put the link here, but if you want to take a look, I can still provide you the link.
BTW, We do have a page for this case in this wiki. I know there's not much on it, but it has some basic information. If you want to know more about this case, feel free to ask. :)