Okay. My first thoughts are these, and if you are interested, take them to heart.
First, classify it as one genre. Make it a Mystery. Limit the horror aspect, because creepy is always more suspenseful than just yucky murder and death everywhere. And romance is easy to write. You just have to throw in little hints every once in a while. Innuendo is the most powerful way to write romance, because it leaves a lot to the imagination. And people can be VERY dirty minded.
Also, you might want to change the profession of the lead character. “Journalist” is kinda odd, because newspapers are fading away as a form of media. He’d have to be a web-journalist, or a TV Journalist. If you don’t have your heart set on Journalism as a profession, you might consider making him a professor at a college (if he’s an older gentleman) or if it’s a younger man, make him a student doing an honors project over the summer, or a graduate student working on a Ph.D. for Psychology, doing a study on this Psychiatrist’s “Life’s Work.” Something like that. Academic people are usually much more interested in psychological experiments than journalists (unless he works for the National Inquirer). Fringe Science, ghosts, things like that, they make more of a dramatic impact on characters that are educated, and KNOW that there’s no such thing as ghosts.
I love the flow of the plot, where you have a murder, some “searching for exits” time where people are confused. You might want to make them pair off using the Buddy System, and that’s how your protagonist and the leading lady first get to know each other.
As optional suggestions, you might want to make the first body they find a “random” body. As in, he’s not part of the core group of characters. And you could make it so that later on, this dead guy that they found is the “mysterious” person helping out the heroes. Kinda like a powerful ghost that is protecting them from the evil doctor.