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1991 · Dallas, Texas

Nancy & Richard Lyon

Featured in Fatal Vows

Nancy Dillard Lyon died from arsenic poisoning in Dallas in January 1991. The investigation examined her marriage and the origin of the poison. Her husband Richard was convicted, and the case inspired both a nonfiction book and a television drama.

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The Story

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When1991
WhereDallas, Texas
In this collection6 resources

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Blogs & Essays

The Journal

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Books

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Books

1 items

A. W. Gray

Poisoned Dreams: A True Story of Murder, Money, and Family Secrets

A nonfiction account of Nancy Lyon’s death and the prosecution, presenting the author’s interpretation of the evidence.

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Movies & TV

Documentaries & Adaptations

Movies

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TV & documentaries

3 items
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Episodes, documentaries and title listings. Season and episode numbers follow the linked catalog and can differ by service. Air dates are separate from crime dates. Playback availability varies by service and region.

Investigation Discovery · Season 3, Episode 10

The Perfect Murder — Murder-in-Law

The platform’s episode listing identifies the Nancy Lyon case. Availability and subscription requirements depend on your region and service.

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A&E · Season 1, Episode 11 · 2003

City Confidential — Dallas: Arsenic and Old Money

A catalog entry identifying the episode’s connection to Nancy Lyon. Open the listing for credits and episode information.

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Fiction Work

Adaptations & Inspirations

Fiction Work

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Scripted stories and fictional inspirations. Scenes, characters, and dialogue can differ from the record.

Sondra Locke · 1995 · dramatized television film

Death in Small Doses

A scripted television adaptation of the Nancy Lyon case. This contemporary newspaper review identifies its factual basis and cast.

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Podcasts & Audio

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Social Media

Videos & Conversations

Social Media

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News & Reading

Reporting, Clippings & Archives

News & reporting

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Newspaper clippings

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Court & Files

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Court records & documents

1 items
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Documents are labeled by type and scope. Allegations in filings are not findings of guilt. This collection is not the complete case file.

Court document

Lyon v. State — 1994 appellate opinion

A published court opinion reviewing the evidence in the Nancy Lyon prosecution and affirming the trial judgment.

Texas Court of Appeals · hosted by CaseMine

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Positive Outcome

Laws, Advocacy & Change

Positive Outcome

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Documented laws, advocacy and reforms. Listing a change does not claim it is effective or universally supported.

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