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The Expert Witness

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From CBC's Uncover. In Akron, Ohio, murder cases that went cold for years are suddenly being solved. But defense attorney Don Malarcik isn’t celebrating; he’s alarmed. The key evidence in these cases is coming from a mysterious AI tool called Cybercheck, a system so secretive that its Canadian founder refuses to explain the details of how the technology actually works. Allegedly, Cybercheck uses open-source data to place suspects at crime scenes without the need for witnesses — and while no one, not even prosecutors, understand how it works — it’s being increasingly embraced by U.S. police services and placing people in prison cells across the country.

As Cybercheck continues to spread, Don teams up with a concerned network of lawyers, investigators, and journalists to unravel what’s really powering this so-called breakthrough in crime-solving. What they find is a tangled story of lies, unvetted tech, and a charismatic Canadian entrepreneur whose invention operates in a black box.

From the makers of Sea of Lies and hosted by Sam Mullins, this season of Uncover asks: what happens when AI enters the courtroom? Who is benefitting from this mysterious technology? And who’s accountable when AI gets it wrong?

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  1. The Expert Witness Introduces: The Big Bet

    How did sports betting go from being illegal to being EVERYWHERE? The answer lies in the convergence of daily fantasy sports apps, a bombshell New York Times op-ed, and the potential of a multi-billion dollar payout. This episode of Underst

  2. The Expert Witness | Trailer

    The small city of Akron, Ohio was drowning in unsolved murders. Until one day something happened. And suddenly those cold cases? Started to get closed. A ground breaking Canadian AI technology was coming to the rescue. Tracking criminal beh

  3. Episode 9: Behind the Curtain

    Sam Mullins looks into Cybercheck’s claimed “success stories” and finds they offer little proof of the tool’s reliability. One defense attorney benefited from a Cybercheck report that actually pointed to an alternative suspect, helping redu

  4. Episode 8: Pick your side. Pick your story.

    Mosher explains that his Cybercheck technology was built to analyze open-source internet data using AI to generate investigative “intelligence,” not courtroom evidence. Mosher admits the company failed early on to clearly communicate those

  5. Episode 7: Hope in West Texas

    In Midland, Texas, prosecutor Lisa Borden took a different approach with Cybercheck. After closely questioning Adam Mosher and finding Cybercheck lacked peer review and proper authentication, she refused to use it in court, concluding the t

  6. Episode 6: The Good, the Bad, and the Ugly

    Cybercheck has spread across the U.S. through aggressive cold-email marketing, word of mouth, and partnerships with law enforcement agencies eager to solve cold cases. Journalist Todd Feathers uncovers questionable claims in Cybercheck repo

  7. Episode 5: Unscrambling Eggs

    Prosecutors privately begin questioning Adam Mosher’s false peer review claims, while defense attorney Don Malarcik uncovers evidence that Cybercheck reports were manually edited—contradicting claims that the system was fully automated. As

  8. Episode 4: Nerds Love Code

    Don Malarcik might finally uncover how Cybercheck works, as its creator Adam Mosher travels to Ohio to demonstrate the software to Don’s legal team and independent experts. While parts of the program appear functional, its core AI remains h

  9. Episode 3: Ducks in a Row

    As Don connects with Colorado defense attorney Eric Zale, they compare notes and troubling inconsistencies emerge—Adam Mosher’s claims about his experience, expertise, and courtroom testimony don’t hold up under scrutiny. Investigators disc

  10. Episode 2: Don’s Copy

    In the ‘parallel universe’ of Boulder Colorado, defense attorney Eric Zale is working on a very similar case. A report claims to link a suspect to incriminating online activity, but offers no clear explanation of how it works or how its con

  11. Episode 1: The Thing

    The city of Akron, Ohio reels from rising violence and stalled investigations until arrests suddenly begin to happen. A mysterious new AI-powered tool called Cybercheck has arrived. Criminal defense attorney Don Malarcik first encounters th

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