are you afraid of kathleen zellner? >> no. anymore. >> she could unravel your work, if what she's saying has some weight to it. you don't think she has a chance. >> i don't. >> she's so confident. why are you so confident? >> we put 18 months putting this case together. it wasn't just thrown together. it wasn't a bunch of keystone kops. it was done very well. >> kratz says he admits to drug abuse, a scandal that led to his resignation. he takes issue with "making a murderer," but is moving on with his life. >> i'm hoping this book will change the narrative. >> with all of the looks at guilt or innocence, with all of the trials and retrials, kim says what is forgotten is her friend, teresa. >> i love hugs. >> for her memories, she says she goes back to this grainy video diary she made three years before she died. it was played at avery's sentencing. >> it gives me the chills every time i hear it. she talked about everything she loved. >> is there anything you would say to teresa if she could hear you? >> that you're in my heart