Stephen Avery is already the star of Netflix’s Making a Murderer – but it seems as if he has set his sights even higher.

Avery, who was found guilty of the murder of 25-year-old Teresa Halbach, was sentenced to life in prison without the possibility of parole.

However, following the recent exoneration of his nephew, Brendan Dassey, Avery has revealed that he is confident he will also be released in the not so distant future.

Read more: Reddit users believe they've found evidence proving Steven Avery is guilty

Whilst filming a new special with Dr Phil McGraw, the 54-year-old called his fiancé, Las Vegas legal secretary Lynn Hartman, for the segment.

The couple recently became engaged after eight months of knowing one another – although they only met face-to-face for the first time earlier this month.

According to Us Magazine, Avery told McGraw: “I haven’t been in love my whole life. It’s not the same as the others. Everything is all different with her.

“I want to wait [to marry] until I’m out and I don’t think that’ll be too long; right around the corner.”

He praised his lawyer, Kathleen Zellner, insisting that he knows that she will “prove my innocence” – and she recently filed a motion to have new tests conducted on the evidence which was partly responsible for his conviction.

Avery is so certain that the tests will prove him innocent that he is already planning on writing  a memoir on his life, about “how prison was, what I went through.”

He hopes the memoir will be adapted into a movie, and even has this planned right down to the person he wants to portray him on the big screen: Brad Pitt.

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While there is some resemblance (Pitt did sport a beard very similar to Avery’s a few years back), it seems as if Avery is basing his choice on word of mouth, as opposed to talent alone.

In fact, he isn’t even sure if he’s seen any of Pitt’s movies, due to limited TV access in prison, noting: "We don’t get too many stations, but we’ve got the news."

Based on the success of Making a Murderer, it seems as if the public would relish the chance to get a closer look at Avery’s life.

The 54-year-old was wrongfully imprisoned for sexual assault, false imprisonment and attempted murder in 1985.

However, thanks to advances in DNA technology, he was found innocent in 2003, and released.

Just two years later, he was re-arrested and charged with the murder of freelance photographer Halbach, who had disappeared after photographing a vehicle at his salvage yard.

Read more: Teresa Halbach's friend slams decision to make second series of Making a Murderer

While bloodstains in her car matched Avery’s DNA, his attorneys went on to claim that Manitowoc County Sheriff's Department had planted the false evidence, in a bid to avoid the huge financial penalty they faced over the first case.

As a result, the Netflix crime documentary cast serious doubts over the decisions of the American justice system, with British fans staging a protest outside the US embassy in London to call for Avery and Dassey’s release.

However, since the show’s initial release, a number of articles have appeared online which suggest that filmmakers chose to show Avery in a biased light, leaving out numerous bits of evidence – including extra DNA evidence.

A second series has already been confirmed, although the makers have yet to reveal a release date.