After more than a decade, Donna Adelson, the matriarch of a prominent Florida family, is about to go on trial for murder. International fugitive Nicholas Rossi stands trial in a Utah courtroom after allegedly faking his death to avoid prosecution for rape charges. In Dateline Round Up, we've got a verdict, a surprise guilty plea, and the latest on Alex Murdaugh's appeal. And 2025 has been a year of natural disasters — do you have your digital go bag packed? We break down what you need to know.

Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com

To learn more about Dateline LIVE in Nashville on Sept. 28, and to get tickets, go here: https://www.nbcnews.com/dateline-event

To listen to Andrea’s episode on Nicholas Rossi, “The Man of Many Faces,” go here: https://apple.co/3VDNusv

Blayne Alexander sits down with Josh Mankiewicz and Dateline producer Michelle Madigan to discuss their episode, “Open Water.” When Micki Kanesaki’s ex-husband Lonnie Kocontes invited her on a European cruise in 2006, she thought it would be a chance to rekindle their relationship. But a few days into the trip, Lonnie awoke to find Micki missing from their stateroom. After a boat captain found her body floating in the Mediterranean, both Italian and American authorities zeroed in on Lonnie as a possible suspect in her death. Two of his friends stepped in to prove his innocence – but soon came to an entirely different conclusion. Josh and Michelle share what it was like working on this episode during the pandemic in 2020. Blayne reveals her secret feelings about the open seas and Josh shares his not-so-secret feelings about cruises. Plus, Josh and Michelle answer viewer and listener questions from social media.

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Listen to the full episode “Open Water” on Apple: https://apple.co/4ltM66b

Listen on Spotify: https://open.spotify.com/episode/6sbElILJRgm55N0aXQ9MKR?si=52f894b4cf764f8c

To learn more about Dateline LIVE in Nashville on Sept. 28, and to get tickets, go here: https://www.nbcnews.com/dateline-event

To make Keith or Josh your voicemail voice, go here: https://soundcloud.com/datelinenbc/sets/keith-and-josh-voicemails-1

A romantic Mediterranean cruise, intended to rekindle the love between Micki Kanesaki and her ex-husband, turns into a tragedy when she vanishes. Josh Mankiewicz reports.