Jurors in Karen Read's trial shocked. Josh Mankiewicz on the Dee Ann Warner case. And a last-minute plea.

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.