>> but as dassey's attorneys delve further into the 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. >> don't lie to us now, okay? come on. what happened there? >> just hurting yourself if you lie now. >> 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 the officers used in this case. >> the attorneys say the investigators manipulated dassey with coaxing statements like these from fassbender who was seated just off-camera. >> i'm your friend right now.