When a Dallas man doesn’t make it home from an early-morning gym session in time to start the work day, his family immediately launches a search. A missing persons case takes a tragic turn for the worst—and the mysterious—in this episode of Last Seen Alive.

Sources used to research this episode:

Family Pleads for Safe Return of Dallas Businessman Alan White Who’s Been Missing Since October (Andrea Cavallier / NBC News)

UPDATE: Alan White’s Car Has Been Found; He Remains Missing (Tammye Nash / Dallas Voice)

Trackdown: $20,000 Reward Offered to Help Find James Alan White (Shaun Rabb / Fox 4 News)

Police Upgrade Search for Missing Dallas Executive to ‘Endangered Missing Person’ (Allie Spillyards / NBC News)

Body of KPMG Executive James Alan White Found in Dallas 6 Months After He Was Reported Missing (Katie Campione / People)

Dallas Police Department Offense Record for Public Release:  083593-2021

James Alan White Dead: Cause of Death Remains Unclear (Heavy.com)

2 Men Arrested Following Kidnapping Incident Near Dallas Love Field (Jozelyn Escobedo / ABC News)

Dallas Man, 1-Year-Old Baby, Safe After Kidnapping, Carjacking (Fox4 News)

‘It’s a Disturbing Trend.’ Cities see Large Increases in Carjackings During Pandemic (Peter Nickeas and Priya Krishnakumar / CNN)

Dallas Violent Crime Update: Fewer Murders, Robberies, Aggravated Assaults Compared to 2020, Department Says (Eline de Brujin / ABC 8 News)

National Youth Gang Survey Analysis: Measuring the Extent of Gang Problems (National Young Gang Center / US DOJ)

If you have any information about the murder of Alan White, please contact the Dallas Police Department at 214-283-4818 and refer to James Alan White and / or case #188623-2020.


When a young mother is murdered in her Michigan home, the brutality of the crime is unprecedented in her small community. An enduring mystery remains unsolved despite a wealth of evidence in this episode of Last Seen Alive.

Sources used to research this episode:

Cold Case Files: Brutal Murder of Cathy Sue Swartz (Kristin Bien / WSBT News)

VIDEO: Cold Case Murder of Cathy Swartz (WSBT News via YouTube)

Summary Crime Reported by the Three Rivers Police Department 1985-2020 (FBI UCR Crime Data Explorer)

Jeffrey Wayne Gorton (Murderpedia)

Dayle Trentadue v. Jeffrey Gorton et al. (State of Michigan Supreme Court)

Former Orlando Subject is Suspect in Michigan Death (Doris Bloodsworth / Orlando Sentinel)

Also, this collection of newspaper clippings from the South Bend Tribune and others, from around the time of Cathy’s death and the following few years:

If you know anything about the murder of Cathy Swartz, please contact the Three Rivers Police Department at  269-278-1235.


When a Florida toddler disappears from his bed and into the summer night, the investigation that follows is as controversial as it is urgent. An open window, a media firestorm and a series of tragedies complicate the search for a missing child in this episode of Last Seen Alive.

Sources used to research this episode:

14 Years Later, Family Hopeful to Find Trenton Duckett (Curtis McCloud / Spectrum 9 News)

Duckett’s Marriage Rocky from the Start (Mabel Perez / The Ocala StarBanner)

Josh Duckett Cleared of Threatening Family (ClickOrlando.com)

Police Release Mother’s Suicide Note (Stephen Hudak and Martin Comas / The Baltimore Sun)

New Lead Widens Probe of Missing Child (Nancy A. Fischer and Maki Becker / The Buffalo News)

Talk Show Host Will Focus on Duckett Case (Christine Dellert / Orlando Sentinel)

Melinda Duckett Prepared ‘Talking Points’ for Nancy Grace Interview ( Stephen Hudak / Orlando Sentinel)

Duckett Suicide Note: ‘After My Baby is Found, I Would Not be a Good Mother’ (Dan Sullivan / Daily Sun)

Nancy Grace Settles Lawsuit Over Guest’s Death (Sheila Marikar / ABC News)

Police Revisit Claimed Sighting of Trenton Duckett (Millard K. Ives / The Ocala StarBanner)

Duckett Deeply Troubled, Notes, Web Postings Show (Buffalo News)

Files in Case of Missing Boy Show Anguish, Tough Choices (Travis Reed / Washington Post)

Missing Boy’s Photos, Toys Found in Trash Bin (Tampa Bay Times)

Trenton Duckett Developments (Christine Dellert / Orlando Sentinel)

Why Did Melinda Duckett Become a Notary? (Austin L. Miller / The Ocala StarBanner)

Transcript: Nancy Grace, 2-Year-Old Disappears from Bedroom (CNN Transcripts)

Transcript: Nancy Grace, Update on 2-Year-Old’s Disappearance / 911 Call Transcript (CNN Transcripts)

Investigators in Leesburg, Marion Still Differ Over Trenton’s Disappearance (Austin L. Miller / The Ocala StarBanner)

Children Abducted by Family Members: National Estimates and Characteristics (US Department of Justice)

Duckett vs. State (Supreme Court of Florida)

Hidden Consequences: The Impact of Incarceration on Dependent Children (Eric Martin / National Institute of Justice Journal)

If you know anything about the disappearance of Trenton Duckett, please contact the Leesburg Police Department at: 352-787-2121.


When a Boston woman is found dead in the trunk of her own car, it’s initially assumed she was the victim of a random crime. However, the discovery of a diary allows the victim to speak from beyond the grave and shed light on her own murder in this episode of Last Seen Alive.

Sources used to research this episode:

Who Killed Su Taraskiewicz? 28 Years On, Her Mother Still Vows to Get Justice: ‘I Am Not Going Away’ (Mara Mantalbano / Inside Edition)

Huge Reward Still Offered in Taraskiewicz Murder Investigation After 28 Years (Bob Ward / Boston 25 News)

28 Years After Susan Taraskiewicz Murder, State Police Determined To Solve Mystery (CBS Boston)

Susan Taraskiewicz (Mass.gov)

United States v. Brooks (United States Court of Appeals, First Circuit / caselaw.com)

29 Years After Susan Taraskiewicz’s Murder Massachusetts State Police Investigation Continues, $250,000 Reward in Effect (Michael Silvia / New Bedford Guide)

Mother Hopes Daughter’s Killer Found (Jay Lindsay / The Intelligencer)

Nuzzo v. Northwest Airlines, Inc (United States District Court, D. Massachusetts / leagle.com)

Murder Mystery: An Unsolved Slaying Of an Airline Worker Stirs Family to Action (Barbara Carton / Wall Street Journal)

Mass. Rules Against Northwest on Harassment (UPI.com)

Slay Probe Witnesses Accused of Perjury (The Boston Globe via newspapers.com)

Brawl Leads to Stabbing Arrest (Boston Globe via newspapers.com)

Northwest Settles Harassment Complaint (UPI.com)

If you know anything about the disappearance of Su Taraskiewicz, please contact the Massachusetts State Police at 508-820-2300.


When a man is found stabbed to death inside his San Francisco apartment, the evidence located at the scene of the crime seems to contradict itself. A controversial, international investigation unfolds in this episode of Last Seen Alive.

Sources used to research this episode:

Who Killed Hugues de la Plaza? (Mary Spicuzza / SF Weekly)

Gruesome San Francisco Death Becomes International Mystery (Jesse McKinley / NY Times)

In Pursuit of Justice: the Story of Hugues de la Plaza (Elizabeth Nolan / Hoodline.com)

48 Hours Mystery: A Case for Murder (ABC News)

Murder or Suicide? (Matt Smith / SF Weekly)

Review of death scene/autopsy findings of Mr. Hugues De La Plaza (Dr Michael Ferenc)

The Weapons Men and Women Use Most Often to Kill (Dan Keating / Washington Post)

Major Differences Between Women and Men Who Commit Deadly Violence (University of Gothenburg / Science Daily)

BROWN v. THE ATTORNEY GENERAL OF THE STATE (United States District Court, N.D. California / leagle.com)

If you know anything about the death of Hugues de la Plaza, please contact the San Francisco Police Department. You can call in a tip at 415-575-4444, text at tip to 847411 or click here to access the tip form on their website.

You may remain anonymous if you wish.


When three women are killed with a knife inside a small town Montana beauty salon, investigators are nearly as stunned as the citizens they serve. A truly unusual crime remains unsolved twenty years later in this episode of Last Seen Alive.

Sources used to research this episode:

The Florence Murders 20 Years Later (Jill Valley / KPAX News)

Dorothy Harris, Brenda Patch and Cynthia Paulus — Florence (The Billings Gazette)

Triple Slaying Stuns Montana Town (Eric Slater / LA Times)

Florence Homicide Stands Alone in FBI Records (Mick Holien and Michael Moore / The Missoulian)

Ask the Judge: Gangs of Montana (Russell Fagg / The Missoulian)

Two Men to be Charged in Connection with Triple-Murder (Michael Moore / The Missoulian)

Florence Murder Suspects Arraigned on New Charges (The Flathead Beacon)

2 Deny Montana Murders (Michael Moore / The Billings Gazette)

Lincoln Benavides Pleads Guilty in US Federal Court (US Attorney’s Office / FBI)

Knife vs. Gun: What a Weapon Reveals (Eric Niller/ Seeker)

Double Homicide Remains Unsolved (Susan Thacker / Great Bend Tribune)

If you know anything about the murders of Brenda Patch, Cynthia Paulus and Dorothy Harris, please call Detective Sergeant Matt Cashell at 406-375-4024.


When a devoted mother disappears from her Texas home on Christmas day, investigators immediately suspect foul play. A bloody trail of evidence points to an obvious suspect and offers a surprising twist in this episode of Last Seen Alive.

Sources used to research this episode:

Family of Patty Vaughan Hopes for Answers 23 Years After She Vanished from Texas Home on Christmas Day 1996 (Andrea Cavallier / NBC News)

Disappeared: Patty Vaughan (Disappeared Blog)

Silent Night (Disappeared Season 3, Ep. 13)

The Mystery of Patty Vaughan (Keith Griffith / Daily Mail)

Search for Patty Vaughan on Former Husband’s Property Turns Up Empty (Stephanie Serna / KSAT News)

Investigators Still Trying to Close Patty Vaughan Case 15 Years Later (Tim Gerber / KSAT News)

New DNA Findings in Patty’s 1996 Disappearance (KSAT News)

If know anything at all about the disappearance and murder of Patty Vaughan, please contact Crime Stoppers at 210-224-7868. You can remain anonymous.


When an experienced Colorado outdoorswoman fails to return from a hike, her vehicle is found abandoned along a scenic route with her personal belongings left inside. Even after the discovery of her partial remains, investigators are left with more questions than answers in this episode of Last Seen Alive.

Sources used to research this episode:

Colo. Woman Missing, Car Found on Side of Road (CBS News)

Taylor: Friends, Family Hold Onto Hope as Search for Former Resident Continues in Colorado (Rene Cizio / The News Herald)

Craigslist Tie in Disappearance of Colorado Woman? (Christina Ng / ABC News)

Authorities Suspend Search for Missing Denver Woman (CBS Denver)

Woman’s Remains Found in Colorado Woods Nearly Three Years After She Vanished Without a Trace (Daily Mail)

More of Amy Ahonen’s Remains Found in Clear Creek (CBS Denver)

Coroner Confirms Remains Found at I-76, Sheridan are Amy Ahonen (Matt Farley / Fox31 Denver)

Animal Scavenging and Scattering and the Implications for Documenting the Deaths of Undocumented Border Crossers in the Sonoran Desert (Jess Beck,1 M.A.; Ian Ostericher,2 M.A.; Gregory Sollish,1 B.A.; and Jason De Leon,1 Ph.D. / Journal of Forensic Sciences)

Bones Aren’t Enough to Say How Missing Denver Woman Died (Associated Press)

If you have any information related to the death of Amy Ahonen, please call the Denver Police Department at 720-913-2000.


When a California man reunites with a long-lost love after a lifetime of separation, they decide to finally marry. Immediately afterward, he disappears, and suspicion surrounds those who may have been preying upon his multimillion-dollar estate in this episode of Last Seen Alive.

Sources used to research this episode:

Robert Harrod (Disappeared Blog)

Two Persons of Interest in 2009 Disappearance of Millionaire Released (Vicky Nguyen / Spectrum1 News)

81 Year-Old Man Missing After Wedding (ABC7NY)

After a 4 Year Search, Missing Placentia Man’s Wife Suspects Foul Play (CBS Los Angeles)

Man, 81, Married High School Sweetheart After Reconnecting with Her — and Went Missing Weeks Later (Chris Harris / People.com)

$50K Reward Offered in 2009 Killing of Placentia Man Who Vanished After Marrying High School Sweetheart (Chip Yost / Erika Martin / Mary Beth McDade / KTLA)

Vanished: Orange County’s Most Infamous Cold Cases | Bob Harrod (Miles Corwin / Orange Coast Magazine)

A Love Story Turned Mystery (Paloma Esquivel / Los Angeles Times)

Disappeared Season 6 Episode 13: Long Lost Love

If you know anything about the disappearance of Robert Harrod, please call the La Placentia Police Department at (714) 993-8164.


When a dedicated firefighter-medic leaves her shift and disappears in the dead of night, the search for her begins immediately. Evidence surfaces from the coastal Florida waters to tell a tragic story in this episode of Last Seen Alive.

Sources used to research this episode:

Brandy Hall (Disappeared Blog)

Missing Firefighter’s Pants Found in Pond (Firehouse.com)

Ex-Fire Chief in Osceola Gets 3 Years for Pot Farm (Mark Pino / Orlando Sentinel)

Ex-Osceola Fire Chief Arrested in Pot-Growing Bust (Erin Cox / Orlando Sentinel)

Brandy Hall Dig Reveals Nothing as Police Plan to Search Another Area (John A. Torres / Florida Today)

[Video] Mother of 2 Drives out of Fire Station, Vanishes – Pt. 1 (Crime Watch Daily)

[Video] Mother of 2 Drives out of Fire Station, Vanishes – Pt. 2 (Crime Watch Daily)

[Video] Mother of 2 Drives out of Fire Station, Vanishes – Pt. 3 (Crime Watch Daily)

When Men Murder Women: An Analysis of 2018 Homicide Data (Violence Policy Center)

If you know anything about the disappearance of Brandy Hall, call the Palm Bay Police Department at 321-952-3539.