The Family Plot

September 29, 2026

AI Summary

5 min read

On July 12, 2024, at 10:15 PM, Tracy Grist called 911 from her home in American Fork, Utah, a tidy scrub community outside Salt Lake City. Her son-in-law, Matt Rostelli, was face down in her downstairs hallway, shot multiple times. In his right hand was a knife. Tracy’s son Kevin admitted to the shooting, and the initial story was straightforward: Matt, an abusive husband, had shown up uninvited and aggressive, wielding a blade. Kevin had acted in self-defense, protecting his sister Kate. But within hours, Matt’s family began to suspect something was deeply wrong. The knife looked backwards in his hand. He was left-handed but held it in his right. His flip-flops were neatly placed by the front door. And the man they knew—loyal, friendly, never abrasive—did not match the volatile intruder described by Tracy and Kate.

Two Families, Two Portraits of a Marriage

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What you'll learn

1 The Family Plot — Dateline NBC
2 Timestamped Outline
3 (02:35) **Setting the Scene in American Fork, Utah** - Josh Mankowitz introduces the quiet Utah community where a deadly family confrontation will unfold
4 (03:57) **The 911 Call and Initial Response** - Tracy reports that her son-in-law Matt Rostelli is face-down in her hallway after being shot
5 (05:30) **Kate's Account to Police** - Matt's wife Kate is brought downstairs past her husband's body, claiming she was upstairs and doesn't know what happened
6 (07:00) **Detective Joe Nordine Takes the Lead** - The young, relatively inexperienced detective becomes lead investigator on what will become an extraordinarily complex case
7 (09:06) **Matt and Kate's Love Story** - The couple met in 2008 in Temecula, California, where Kate worked at a grocery store and made Matt's sandwich

+ Full timestamped outline available in the app

Show Notes

Josh Mankiewicz reports on the shooting death of Matt Restelli at his mother-in-law’s home, which initially appeared to be self-defense but was soon suspected to be murder.

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