Transcript for 'Making a Murderer' Subject Steven Avery Speaks Out From Prison

half-hour, the murder case captivating the nation. Now Steven Avery the convicted killer from the netflix making a murderer is breaking his silence. His new lawyer says she has evidence that will set him free. ABC's linsey Davis is here. Reporter: She's using Twitter to defend Avery's innocence. Announcing to her followers that she won't quit until she's out this morning, the man at the center of making a murderer, the netflix series that's captivated the nation is speaking out from prison for the first time since the show's debut. Steven Avery wrote a three-page letter to ABC affiliate to saying the real killer is still out there, who is he stalking now? Avery is serving a life sentence for the 2005 murder of Teresa Halbach. He previously served 18 years in prison for a rape he did not commit. His defense attorneys claim Avery was framed by the local count sheriff's department because of that multimillion-dollar lawsuit. How many times will Steven Avery be charged with rapes he didn't commit snr. Reporter: Also included in his letter, comments on an HBO interview from his ex-girlfriend. What do you want people to know? The truth. Which is? What a monster he is. And he's not innocent. He suggested that the state must have gotten to her and paid her off to get her to say bad things about him. Reporter: Meanwhile Avery's new attorney tweeting she visited her client and reviewed his 38 boxes of files adding he remains innocent and framed. Telling the "The New York times" that she'll present new evidence in court. His former defense attorney telling ABC news, while he sometimes question his innocence -- A big part of me worries he might be guilty. If convicting people on maybes, or possiblies is how this system worked, that's great. But that's not how the system is supposed to work. One of the local sheriff's deputies has been accused of possibly planting evidence against Avery has spoken out, be careful what you wish for if Steven Avery is ever freed he might just become your neighbor. Robin.

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