Erin Patterson tries to enlist her estranged husband's family to help reunite the family.

Patterson cooks a big meal of Beef Wellington and invites her ex, Simon Patterson, as well as Simon's parents Gail and Don Patterson. Erin also invites Gail's sister Heather and her pastor husband, Ian Wilkinson to the dinner.

Simon Patterson cancels at the last minute. The rest of the family enjoys the meal. Gail Patterson, 70, and her husband, Don, 70, both get sick within a day of eating the food. Gail Patterson's sister, Heather Wilkinson, 66, and her husband Pastor Ian Wilkinson, also get sick. All three die a few days later. Much beloved Pastor Ian Wilkinson survives the meal but now needs a liver transplant.

Police opened an investigation saying the people who fell ill and died displayed symptoms of having eaten death cap mushrooms. Erin Patterson is arrested and charged with 3 counts of murder and 5 counts of attempted murder.

The 49-year-old maintains her innocence and stresses she did not intentionally poison her guests.

Joining Nancy Grace Today:

Jarrett Ferentino – Homicide Prosecutor in Pennsylvania; Host: “True Crime Boss” Podcast; Facebook & Instagram: Jarrett Ferentino
Dr. Bethany Marshall – Psychoanalyst (Beverly Hills); Twitter: @DrBethanyLive/ Instagram & TikTok: drbethanymarshall; Appearing in the new show, “Paris in Love” on Peacock
Chris McDonough – Director At the Cold Case Foundation, Former Homicide Detective; Host of YouTube channel: “The Interview Room”
Joe Scott Morgan – Professor of Forensics: Jacksonville State University, Author, “Blood Beneath My Feet,” and Host: “Body Bags with Joseph Scott Morgan;” Twitter: @JoScottForensic
Dr. Lyle D. Burgoon, Ph.D. – Toxicology Expert, President and CEO of Raptor Pharm & Tox, Ltd., and Fellow of the Academy of Toxicological Sciences; Critical Science Podcast: https://critscipod.com; Twitter/X: @DataSciBurgoon
Nicole Partin - CrimeOnline.com Investigative Reporter; Twitter: @nicolepartin

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INFAMOUS: The Mushroom Cap Murders