Outside Boston, the lead investigator might be an asset for the defense. His texts about Karen Read present a real obstacle for the prosecution's case. No physical evidence of actual murder? No problem. Why a judge says Dee Ann Warner's husband should go to trial in Michigan. Dateline's Josh Mankiewicz brings us up to speed and tells us why the case got under his skin. 13 years ago John Carter went on the Today show to beg the public for help finding his fiancée, Katelyn Markham. Now, on the eve of trial, another public statement from him upends the case.

NBC10 Boston is covering Karen Read's trial.

Listen to the Dateline: Missing in America podcast.

WLWT Cincinnati has the latest on Katelyn Markham's case.

Alleged serial killer Rex Heuermann is facing more charges. A TikTok influencer charged with murder finds out if his performance on the stand was convincing. NBC San Diego's Dana Williams tells us the courtroom erupted after the verdict was read. And just up the 5 in Orange County, a legal strategy is being tested in the case of Sam Woodward, charged with a hate crime in the killing of his high school classmate, Blaze Bernstein. The state says Sam killed Blaze for being gay. Defense says it's complicated. Reporter Louis Keene brings us his observations from the trial, now in its third month.

For more of Louis Keene's reporting, read his work at The Forward.

WNBC is following Rex Heuermann's case.

Listen to Dateline's episode called "The Hunt for the Gilgo Beach Killer."

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.

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.