No idea on developer.
The oddly situated boutique is called a boutique. It's locked and on the same property as the house. I think we get in once. The person who owns the boutique is female.
She's either the victim or her husband is.
Location: My dim sense is that this is a sub-genre which in print fiction would be called a country house murder, so I'm guessing Great Britain or maybe the United States.
At this point I'm not even sure how good the game is but I do recall it's a murder mystery and that the graphics are adequate but not over the top wonderful.
I have been trying to find murder mysteries ever since we talked about them a while back.