Witd Dassey News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Dassey. >> even they know that that is bad police practice. >> reporter: then they discovered something at the end of that interview which was a revelation to them. something jurors in his trial never heard. dassey speaking to his mother. at the first moment that brendan gets outside the influence of those interrogators, he says, no, this is not true. they got to my head. >> reporter: but tom fassbender, the interrogator himself seize it all very differently. >> coming up. >> reporter: this was scene by many as a false confession. >> i feel a real confession. he knew right from wrong. brendan ...

Here with more of our story is andrea cannon. >> all of the renewed attention in the steven avery saga has shed light on the other defendant in the case. brendan dassey. the teenager had been convicted of rape and murder. but to his family, none of it ever made any sense. is brendan capable of rape? >> no. i don't think he knew what that was at the time. >> reporter: in 2008, attorneys steven and laura took up dassey's case for his appeal. they saw a mentally challenged teen with a low i.q. >> how do you spell -- >> gra-r-a-g---r---a---g---eg-- >> reporter: brendan is a simple soul and struck ...

They knew what they wanted him to say. >> reporter: they accuse the investigators of planting details about the crime in dassey's mind to get the answers they wanted. for example, remember steven avery's dna found on the car hood latch? the attorneys say investigators asked dassey leading questions to confirm that his uncle had looked under the hood of the car. >> reporter: dassey's attorney say in that same interview the investigators used another crucial detail they learned about the case from the forensics. >> they had received a report from the wisconsin crime lab

Social line but he could think and he knew right from wrong. >> reporter: is it possible he is easily manipulated? >> it's possible. >> reporter: he sounded confused at times. >> quite possibly. >> reporter: he didn't know what was up and down. i don't know. just watching it. >> i don't know about that. my thought he had a million things going on in his head at that time. >> reporter: fassbender resisted that they planted ideas in dassey's head like the hood latch. what did brendan say? >> he agreed that steven had gone under there. >> reporter: you use the word "agreed." >> yes. >> reporter: ...

>> reporter: he denies -- >> i legitimately was concerned for him. that wasn't staged. that wasn't strategy. >> reporter: why do you think people took it the other way that the more sinister way, thaw were taking advantage of him? >> i think that's easy to do. it's a cynical approach, so to speak. watching tv, watching movies, how cops are depicted on those movies and trying to trick people in to saying stuff. everything about the interview with brendan was soft, was comfortable. >> reporter: but comfortable might not be a word dassey supporters would use, especially given his age and intellig...