Ghosthunt is a horror, mystery and shoujo anime. The say it's also a "comedy" but the humor is really vague, below mild and, simply, not funny.
For the other clasifications, I would say that the "mystery" part is ok, the cases they solve are pretty well told through the storyline and they really are interesting. The "horror" part is growing as the eposodes go on, but it is not a full fledged horror. As for "shoujo", yeah, it is.
The anime consists of cases and they are all interesting and closed in a good way. Everything is explaind. But, the main objection to the anime is a really poor character development... really poor. Basically nothing is told about the characters and when something is acctually explained, it is really brief, considered not important and it is never mentioned again. Like someone told that fact only to fill air time. Like that is not impotant at all. Something big and important is told about some character but the anime doesn't stick by that topic and it just continues with the current case, the current action in the anime. Like the anime is done only for the cases, only for the actions, only for the "doing" part and not for "connecting", "developing", "explaining why the characters are like they are".
In conclusion, I believe there are a lot of people who can enjoy in this anime, there are even deaths, the cases are interesting, sound is good (eventhough the 1st opening theme's video is the worst I have ever seen xD), the art is OK, but the characters are pretty shallow.
If you are looking for some deeper anime that will captivate you, I don't think this will be the one.
