A new Netflix docuseries raises questions about whether all relevant evidence was aired in the courtroom during O.J. Simpson’s murder trial 30 years ago. “American Manhunt: O.J. Simpson” highlights two people with potentially incriminating information against Simpson,

Arguably the biggest mystery in the O.J. Simpson case that never got solved is what happened to the murder weapon, a knife. No murder weapon was presented as evidence in the trial, and no proof of its whereabouts has turned up in three decades. And yet, a couple of people interviewed for American Manhunt think they know what happened to it.