Sounds like a pretty good idea, but you shouldn't really worry about the detective cliche. Most of the time "Adventure Game" means "detectives who walk around and use stupid/funny objects to complete small quests often involving broken machinary and long term puzzles"
I can't really critique it right now, because I don't know what happens between parts. So far it sounds good.

I can't really critique it right now, because I don't know what happens between parts. So far it sounds good.