this is not the first controversy around a case involving steven avery. >> he was exonerated back inpe he did not commit. >> there is not one iota of physical evidence in this case that connected steven avery. >> two years into his free, he became the focus of an investigation of teresa halbach. >> her car with with avery's blood in it was discovered in avery's salvage yard. her remains found in a fire in his yard. >>> he says that they planted evidence and forced his learning disabled nephew into a confession. >> it is not a documentary at all. it is an advocacy piece. >> ken kratts said the series ignores incriminating evidence presented in the trial. >> it does very little to help the search for the truth. that is a function that is uniquely give ton jurors and the jurors did that when they returned their verdicts. >> we the jury find the defendant steven avery guilty of passenger sid homicide. >> are you convinced of his innocence? >> i'm not convinced of his guilt. >> you're saying there is doubt in your mind? >> sure, absolutely. if it was okay to convict people on maybes -- bu

picks up where the first season left off raising big questions about whether convicted murderer steven averynd his nephew could have been framed. we have kathy park with the latest. kathy, good morning. >> reporter: peter, good morning. it's been three years since a real-life crime series became a must-see television show. it is a real-life crime series. viewers formed strong opinions about the cast of characters. now in season two it is the freedom for the two convicted killers. >> do we have a body or anything yet? >> reporter: a 2005 murder case in rural wisconsin became a binge-worthy obsession in rele late friday on netflix, a sequel. murderer" part two both convicted of killing 25-year-old halbach. from the investigation to the courtroom, the show dviewers wi leaving them with more questions at the end of season one. >> the truth comes out. sooner of later. >> reporter: through ten episodes, season two spotlights a post conviction phase through dassey's lawyers. and then introduces avery's new advocate -- >> prominent attorney kathleen zelner has taken the avery case. best known for ov