There was a game that I played back in the 90's about a detective who was trying to solve a murder in a hotel. The scene kept changing from a normal hotel to a dilapidated horror one (not unlike the upside down from Stranger Things). It was an old point and click games, with buttons on the bottom (walk, look, use, etc). I remember that the bad things that happened in this game is connected to an old evil Gaelic god or something... because its sacred tree was cut or something.
Can someone help me with the title?