Not sure if you can call it adventure. It is a point and click game but it's a horror one. It's kind of hard, I had to use an online guide to finish it. But the game did creep my out and there were two points that made me jump, and the ending sent shivers down my spin.
It's called Scratches for the PC. It's about a writer who is trapped in a house and he keeps hearing scratching noises in the basement. As you explore the house you learn about the dark past of the ones who lived there and you start to experience things that question your sanity. But what ever you do, DO NOT, play the directors cut. Normally, the directors cut of games are better but the directors cut of Scratches is not. For some reason they replaced the original voice actors with new ones who were not as good as the first and they changed the ending to a worser one. Play the original and not the directors cut. Here's a trailer.
http://www.youtube.com/watch?v=T-ZtWd9oPPM