Sneak Peek: “Simply Diabolical” Dennis Murphy reports on the Michelle Hadley case, Friday | Dateline

A bizarre cyber-revenge case lands a young woman in jail; an unexpected twist reveals the real culprit. Dennis Murphy reports Friday, August 21 at 10/9c on NBC.

NBC News Logo Politics U.S. News WorldLocalNew YorkLos AngelesChicagoDallas-Fort WorthPhiladelphiaWashington, D.C.BostonBay AreaSouth FloridaSan DiegoConnecticut Sports Business Health SHOPPING TiplineSubscribe

Subscriber HubSavedNewslettersProfileSubscriptionPreferencesSearchSearchSectionsU.S. NewsPoliticsWorldBusinessSportsInvestigationsCulture & TrendsHealthScienceTechWeatherVIDEOPhotosSudokuNBC SelectedNBC Asian AmericaNBC BLKNBC LatinoNBC OUTLocalNew YorkLos AngelesChicagoDallas-Fort WorthPhiladelphiaWashington, D.C.BostonBay AreaSouth FloridaSan DiegoConnecticuttvTodayNightly NewsMeet the PressDatelineFeaturedNBC News NowNightly FilmsStay TunedSpecial FeaturesNewslettersPodcastsListen NowBusiness in AmericaMore From NBCNBC.COMNBCU AcademyPeacockNEXT STEPS FOR VETSNBC News Site MapHelpFollow NBC News news Alerts

There are no new alerts at this time

SearchSearchFacebookTwitterEmailSMSBlue SkyWhatsappPrintRedditFlipboardPinterestLinkedinLatest StoriesPoliticsU.S. NewsWorldSportsBusinessHealthSHOPPINGTiplineDATELINE FRIDAY SNEAK PEEK: Simply DiabolicalAug. 19, 202602:06Now PlayingDATELINE FRIDAY SNEAK PEEK: Simply Diabolical02:06UP NEXTDATELINE FRIDAY PREVIEW: Simply Diabolical00:53DATELINE WEEKEND MYSTERY SNEAK PEEK: The Butterfly01:27DATELINE WEEKEND MYSTERY PREVIEW: The Butterfly00:59A Postcard from the Field: Chaloner & Co.02:03A Postcard from the Field: The Isom Place in Oxford, Mississippi03:05True-Crime Fans Pack Nashville’s Pinnacle for Dateline Live Event00:29Dateline returns for Season 34!00:30Josh Mankiewicz tours Palm Springs01:56A Postcard from the Field: Modernism in Palm Springs02:09Dateline correspondents play “Most Likely To…” 03:26A Postcard from the Field: Oahu’s Surf Scene02:17A Postcard from the Field: The Evidence Whisperer03:33A Postcard from the Field: The Grackles of Austin, Texas01:16A Postcard From the Field: Versailles Restaurant02:57A Postcard from the Field: The Lincoln-Douglas Debate Interpretive Center03:13A Postcard from the Field: The Edmonton Oilers02:38A Postcard from the Field: The Victorian on Main02:06A Postcard from the Field: Dick’s Den in Columbus, Ohio01:16A Postcard from the Field: Bull Shooters02:42DatelineDATELINE FRIDAY SNEAK PEEK: Simply Diabolical02:06CopiedA bizarre cyber-revenge case lands a young woman in jail; an unexpected twist reveals the real culprit. Dennis Murphy reports Friday, August 21 at 10/9c on NBC.Aug. 19, 2026

onNow PlayingDATELINE FRIDAY SNEAK PEEK: Simply Diabolical02:06UP NEXTDATELINE FRIDAY PREVIEW: Simply Diabolical00:53DATELINE WEEKEND MYSTERY SNEAK PEEK: The Butterfly01:27DATELINE WEEKEND MYSTERY PREVIEW: The Butterfly00:59A Postcard from the Field: Chaloner & Co.02:03A Postcard from the Field: The Isom Place in Oxford, Mississippi03:05Get more newsLiveonBest of NBC News