Amanda Knox shared a video on Tuesday expressing her support for Making a Murderer prisoner Brendan Dassey.

Knox, who spent four years in prison after being accused of murdering her roommate, said: 'If you're worried about how the system treated Brendan Dassey, you're not alone. I am too.

'There's a lot of really sad things going on in this world, but there's also a lot of hope.'

Amanda Knox shared a video on Tuesday expressing her support for Making a Murderer prisoner Brendan Dassey. Knox encouraged viewers to visit the website for the Center on Wrongful Convictions of Youth to learn more about wrongful convictions

Knox encouraged viewers to visit the website for the Center on Wrongful Convictions of Youth to learn more about wrongful convictions.

The video, which was shared on Facebook by Tracy Keogh, has more than 4,500 views.

Knox spent four years in an Italian prison and eight years on trial after being convicted alongside her then-boyfriend, Raffaele Sollecito, in the 2007 stabbing death of her roommate and British student Meredith Kercher.

She was exonerated by the Italian Supreme Court in 2015 and then returned to Seattle to rebuild her life.

Rudy Guede was tried separately in a fast-track procedure and in October 2008 was found guilty of the sexual assault and murder of Kercher. He is currently serving a 16-year sentence.

Since then, she's been advocating for the wrongfully accused with the Innocence Project, and describes herself as an essayist and public speaker.

Her support of Dassey stems from the documentary Making a Murderer which captured attention in 2015 with its story of how Steven Avery and Dassey were convicted of a brutal murder.

The documentary threw a harsh light on the US justice system, and Avery and Dassey are currently striving for freedom after 10 years behind bars.

Knox (pictured in 2011) spent four years in an Italian prison after being convicted alongside her then-boyfriend in the 2007 stabbing death of her roommate Meredith Kercher. Since then she's been advocating for the wrongfully accused with the Innocence Project

Her support of Dassey (left) stems from the documentary Making a Murderer which captured attention in 2015 with its story of how Steven Avery (right) and Dassey were convicted of a brutal murder

Making a Murderer followed the 2005 killing of Teresa Halbach in rural Wisconsin that brought life sentences for scrap-car dealer Avery and his then 16-year-old nephew, Dassey.

Part 1, released in December 2015, left lingering questions and a public appetite for more, said filmmakers Laura Ricciardi and Moira Demos.

The 10-episode Part 2, released on Friday, shows viewers 'what it's like for someone who has been convicted of a very serious crime and is sentenced to life in prison yet who is challenging that conviction,' Ricciardi said in an interview.

Making a Murderer called into question the conduct of law enforcement officials and the rights of criminal defendants, particularly teens like Dassey, whose lawyers argued was coerced into confessing to the crime.

Ricciardi, a former lawyer, and Demos have been working on the story for more than 10 years but have not lost faith in the judicial system.

'We are firm believers in transparency and that progress will only come through visibility and debate - that's very encouraging,' said Demos.

'Perhaps what you see when you shine a light on things can be depressing, but you have to face it before you make it any better,' she added.

While Part 1 played out through court hearings and trials leading to the convictions, in the new series Avery gets a new attorney who re-investigates the murder and tracks Dassey's quest to bring his case before the US Supreme Court.