Looking for a very old game. Really vague description sorry.?

Very long time ago i remember i played this game on computer i dont remember any names but you were playing as some sort of detective and you arrived in a town (really dark atmosphere) on a horse carriage if i remember correctly. Local people were really unfriendly towards you in the beginning and later on you had to hide from them because they would attack you (not sure if you could fight back but probably yes) I also remember a part where i was in the house and there was a locked room upstairs and when i unlocked it a monster of some sort came out. (before you could peek through like a hole and see what was inside). Thats pretty much it i dont remember anything else expect as i mentioned it was kind of horror-ish. Really apologize for the vague desc. and my english but thank you everyone for reading this and maybe knowing what game it is.