The LA Innocence Project has taken on Peterson's case, arguing in a filing he may be innocent of the 2004 murders of his wife and unborn son. Dateline producer Susan Leibowitz breaks down their arguments to run new DNA tests on old evidence. In Jacksonville, prosecutors lay out their case against Shanna Gardner, accused of plotting to kill her ex. And KHQ Anchor Hayley Guenthner reports back from a sentencing in Coeur d'Alene, Idaho, where a judge called a former state trooper a "remorseless killer."<a href="https://www.khq.com/users/profile/hguenthner/" target="_blank">More reporting by KHQ's Hayley Guenthner</a>

The LA Innocence Project has taken on Peterson's case, arguing in a filing he may be innocent of the 2004 murders of his wife and unborn son. Dateline producer Susan Leibowitz breaks down their arguments to run new DNA tests on old evidence. In Jacksonville, prosecutors lay out their case against Shanna Gardner, accused of plotting to kill her ex. And KHQ Anchor Hayley Guenthner reports back from a sentencing in Coeur d'Alene, Idaho, where a judge called a former state trooper a "remorseless killer." More reporting by KHQ's Hayley Guenthner

The LA Innocence Project has taken on Peterson's case, arguing in a filing he may be innocent of the 2004 murders of his wife and unborn son. Dateline producer Susan Leibowitz breaks down their arguments to run new DNA tests on old evidence. In Jacksonville, prosecutors lay out their case against Shanna Gardner, accused of plotting to kill her ex. And KHQ Anchor Hayley Guenthner reports back from a sentencing in Coeur d'Alene, Idaho, where a judge called a former state trooper a "remorseless killer."<a href="https://www.khq.com/users/profile/hguenthner/" rel="noopener noreferrer">More reporting by KHQ's Hayley Guenthner</a>

Scott Peterson is back in court. Did a Florida mom mastermind a murder? And a surprising sentence in Idaho.

A weekly news podcast for the true crime junkie, from the true crime experts you’ve come to trust. Every Thursday Dateline correspondent Andrea Canning and her guests dive into the biggest crime stories of the week, bringing you the latest on trials and investigations around the country. Whether she’s talking to reporters fresh from the courthouse, NBC News legal analysts or a Dateline team in the field, she’s got fresh insights and behind-the-scenes scoops. Stay up to date and in the know with Andrea and her guests as they listen in on court proceedings, swap story tips and dissect cases. And you never know when Josh Mankiewicz or Keith Morrison might drop in.

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Scott Peterson is back in court. Did a Florida mom mastermind a murder? And a surprising sentence in Idaho.

Scott Peterson is back in court. Did a Florida mom mastermind a murder? And a surprising sentence in Idaho.

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