User blog comment:NicktheDummy/Tips for Goosebumps: The Game/@comment-28171460-20160718213820

I think you're supposed to kill Dr. Brewer's clone in same way that he was killed in the TV Episode. In the book, Margaret uses a hatchet to kill the clone. I don't think that you can use a hatchet in the game. (Correct me if I'm wrong.)