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

Things get testy when Karen Read’s defense attorney confronts the prosecution’s star witness. The woman who wrote a children’s book about grief, only to be accused of murdering her husband, sends Dateline recordings from jail. NBC News legal analyst Danny Cevallos explains why it's taking so long for the judge to set a trial date in the case of the man accused of murdering four University of Idaho students. Plus, an expert breaks down cell phone mapping and how it might help - or hurt – Bryan Kohberger’s case.

NBC10 Boston is covering Karen Read's trial.

On the eve of a hearing in the actor's shooting case, Andrea Canning talks to NBC News Correspondent Chloe Melas about the latest motion to dismiss. In a Boston suburb, a woman accused of murder says she's the victim -- of a conspiracy. Dateline producer Sue Simpson is one of just 10 members of the press in the tiny courtroom where Karen Read stands trial. In Boise, East Idaho News reporter Nate Eaton updates Andrea on the differences between the trials of Lori Vallow and her fifth husband: self-proclaimed prophet Chad Daybell. And special guest Keith Morrison drops by with his own take on the Daybell case.

NBC10 Boston is covering Karen Read's trial.

Nate Eaton recaps every day at Chad Daybell's trial for East Idaho News.