It’s the real-life whodunnit that gripped the world over the Christmas period. Netflix’s Making A Murderer follows the story of Steven Avery, a man who spends 18 years in prison having been wrongfully convicted of rape, only to then be accused of the murder of photographer Teresa Halbach months after his release. Since then, Avery has spent ten years incarcerated following his conviction: the documentary makes the compelling argument that Avery was set up by the authorities in both cases.

Today, it was announced that Steven Avery’s new attorney, Kathleen Zellner, will bring a fresh appeal to court in 30 days time. Zellner specialises in wrongful conviction cases and has an impressive track record of proving the innocence of 17 men.

The key piece of new evidence Zellner will present is said to be provided by advanced Luminol testing. Luminol reactions are used to detect blood residue that is unseen to the naked eye, by reacting in such a way that stains become visible under a blacklight. It’s basically the trick that you’ve seen in every episode of CSI/Silent Witness/NCIS ever: but for some reason no one has ever thought to use it until now. Go figure.

This will allegedly prove the complete historical absence of Teresa’s blood from key areas of the Avery’s property, proving that Teresa Halbach was killed in neither Steven’s trailer, nor his garage, as former State Prosecutor Ken Kratz had claimed.

Zellner has also reportedly purchased an exact replica of the Toyota Rav 4 that Teresa Halbach was driving the day she disappeared, implying that she plans to re-evaluate the role of the car in her death.

Kathleen Zellner believes she will be able to achieve the total exoneration of Mr Avery with the presentation of this new evidence. “We are confident Mr. Avery’s conviction will be vacated when we present the new evidence and results of our work to the appropriate court.” We all knew that the end of Making a Murderer was really just the beginning.