would you apologize to brendan dassey? not being at that interview. - so there were mistakes made. - oh, sure. there were mistakes, but none of them contributed to the verdict in dassey's case. there are people who disagree with that. oh, sure. andrea canning (voiceover): but as dassey's attorneys delved further into those stunning statements the teen made, they came to believe something more disturbing, that investigators tom fassbender and mark wiegert had coerced the teen into making a false confession. these officers took advantage of a disabled youth and got him to say what they wanted him to say. steven drizin: he's got severe learning disabilities, inability to respond in narrative-type answers, and they're in precisely the areas that make him vulnerable to the kind of tactics that the police officers used in this case. andrea canning (voiceover): the attorneys say that the investigators manipulated dassey with coaxing statements, like these from fassbender, who was seated just off camera. they should never have mad