The twin sons of the man at the center of the controversial Netflix documentary, Making of a Murderer, open up about life with their father and his now-famous murder conviction

Steven Avery's Son Speaks Out About Teresa Halbach's Murder in First Ever Interview: 'I Don't Think He Did' It

Even though Steven Avery is behind bars for the 2005 murder of 25-year-old Wisconsin photographer Teresa Halbach, one of his twin sons says he doesn t think his father killed her.

Avery’s sons spoke out for the first time on Crime Watch Daily – in clips shared exclusively with PEOPLE – about the man at the center of the Netflix docuseries Making a Murderer.

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When one of the twins, Bill Avery, was asked if his father committed the murder, he replied, “No, I don t think he did.”

His twin brother, Steven Jr., told Crime Watch Daily that he isn t sure. “I have no idea,” he told interviewer Melissa Moore. “I mean, only one person can answer that and that is Teresa. But she can t answer it no more.”

Steven’s 2007 trial and subsequent conviction for Halbach’s murder made headlines following the December release of the hit docu-series, Making a Murderer.

His sons spoke about the realities of seeing their family tragedy play out in the public eye.

“It sucks having everything out in the open like that,” says Steven Jr. “At the same point, it s good because a lot of people see a little bit of a bigger picture.”

Opening up about his relationship with his father, Bill says, “I just see him as a complete stranger. I know that he s my father, but I grew up without a father for so long that it just kind of feels like I don t have (one).”

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Filmed over a decade, Making of a Murderer casts doubt on Avery’s conviction, advancing the theory that Avery might have been framed by authorities in retaliation for filing a $36 million lawsuit against Manitowoc County and authorities after a wrongful conviction for rape that sent him to prison for 18 years before being overturned.