If it is true that Dustin is an accomplished pianist, and the task at the piano-pitch is to find the one key that is out of tune, she would have no trouble finding the out of key key by just playing each of the 88 in order. The out of tune key would leap out at her like a duck out of water.
Speaking of deer, we have them coming out of the gazoo. They are everywhere and multiply like rabbits. They have no fear and come right up the house or miander right down the middle of the road. Hit one and buy a new car.