20/20 True Crime Vault: "Rocky Mountain Horror"
Original Air Date: April 28, 2026
Host: ABC News
Main Theme:
An in-depth investigation into the horrifying case of Scott Kimball—a charming, manipulative conman turned serial killer, who operated as an FBI informant while committing multiple murders. The episode reveals the devastating impact on families of the missing, the failures of the justice system, and the tireless efforts by victims’ families and law enforcement to uncover the truth.
Episode Overview
This episode explores the chilling case of Scott Kimball, the "Hannibal" informant, whose manipulation allowed him to deceive families, the FBI, and even his own children as he perpetrated fraud, violence, and murder. Through interviews with families, survivors, law enforcement, and prosecutors, the episode traces Kimball's crimes—from the disappearance of young women to financial scams and failed escape plots—and the slow, painful march towards justice.
Key Discussion Points & Insights
1. The Suffering of Families United by Tragedy
- Timestamps 00:43–01:13, 24:35–25:16, 47:20–48:04
- Rob McLeod and Bob Marcum, fathers of missing daughters, form a bond in their mutual quest for answers.
- Both families recount the agony and hope that turned to despair as Christmases passed with loved ones gone.
- "I just wanted her home." — Rob McLeod [41:11]
- "I hope and I pray all the time that God would tell me something so that I can find her." — Bob Marcum [41:14 & 76:56]
2. The Disappearance of Casey McLeod and Jennifer Marcum
- Timestamps 03:13–14:30, 25:04–27:31, 33:22–34:10
- Details Casey’s turbulent teens, her disappearance after a suspected relapse into drugs, and her last call to her mother.
- Jennifer, a single mom and dancer, vanishes while entangled in a drug investigation, becoming another cold case.
- "She just happy all the time, smiled all the time." — Lori McLeod [03:23]
- The last person seen with both: Scott Kimball.
3. The Deceptive Charisma of Scott Kimball
- Timestamps 04:14–06:07, 07:35–08:21
- Kimball ingratiates himself to families, claiming to be an FBI agent with connections to help.
- "He was everything and a dad that I wanted." — Justin Kimball [07:06]
- He instills hope while actively orchestrating deceit and inflicting further pain.
4. Kimball’s Double Life and Web of Lies
- Timestamps 08:27–15:50, 21:04–23:59
- Manipulates Lori McLeod into marriage, falsely leveraging his "FBI job" and her despair.
- Leaves clues, such as Casey’s necklace, to suggest the missing are alive.
- FBI Special Agent Carl Schloff and Detective Thatcher confront the anomaly: an FBI informant is the prime suspect in two disappearances.
5. Systemic Oversight and the Informant Scandal
- Timestamps 23:05–25:04, 55:37–55:57, 81:04–81:49
- FBI admits Kimball was a paid informant, unaware of his true capabilities for harm.
- "He duped me." — Special Agent Carl Schloff [80:36]
- Changes in the FBI’s handling of informants emerge as a hard lesson.
6. Ties Between Victims, Kimball, and Criminal Enterprise
- Timestamps 35:05–39:09, 49:08–55:16
- While working with the FBI, Kimball exploits his role to target vulnerable women connected through drug cases and prison cellmates.
- Manipulates Jennifer Marcum and Leann Emery under the pretense of helping them or their boyfriends.
7. Family Trauma and Surviving Kimball
- Timestamps 35:33–43:10, 82:14–83:02, 82:27–82:49
- Justin Kimball recollects the harrowing "accident" at 10 years old, in which his father nearly killed him for insurance money.
- "Why did dad do this to me?" — Justin Kimball [40:13]
- Surviving children and spouses reflect on living with the trauma and the reality of a loved one as a killer.
8. Law Enforcement’s Dogged Pursuit of Truth
- Timestamps 45:06–50:08, 66:24–68:24
- Investigators piece together Kimball's criminal history across jurisdictions; securing evidence is slow and often stymied by lack of bodies.
- Persistence pays off with the discovery of Casey’s remains—finally uniting grieving parents with answers.
9. Deal with the Devil: Plea Bargain and Search for More Victims
- Timestamps 70:05–77:30
- Investigators offer a reduced sentence in exchange for Kimball leading them to victims’ remains.
- "We just made a deal with the devil." — Narrator / Investigator [64:26 & 71:17]
- Ultimately, remains of Leann Emery and Uncle Terry are recovered; Jennifer Marcum remains missing.
10. Aftermath: Justice, Regret, and Lingering Loss
- Timestamps 76:56–78:42, 80:36–81:49
- Kimball sentenced to 70 years; families speak in court about their loss.
- "My daughter was a young woman with feelings and dreams and to treat her like trash is despicable." — FBI Special Agent Carl Schloff [78:17]
- Kimball remains manipulative—plotted an escape even behind bars.
11. System Failure and Reforms
- Timestamps 81:01–81:49
- The FBI reflects on failures and changes its practices with informants to avoid similar tragedies.
12. Enduring Unanswered Questions
- Timestamps 81:54–82:09
- Authorities estimate Kimball might have killed between 21 and 40 people.
- "How many other victims do you think are out there...?" — Interviewer / Host [81:54]
Notable Quotes & Memorable Moments
- "You don't take a guy that's lied all of his life or told a lot of lies all his life and get him to invest the truth in him one day." — Interviewer/Host [41:37, 59:13]
- "Why did dad do this to me?" — Justin Kimball [40:13]
- "He is a monster with no conscience and should be treated as such." — Lori McLeod [78:27]
- "He's unforgivable. And he's exactly where he belongs." — Justin Kimball [78:37]
- "[Casey’s] purpose was to catch him...so it wasn't the destiny I had hoped for for my daughter. But God has her, and nobody can ever hurt her again." — Lori McLeod [83:02]
Important Segment Timestamps
| Segment | Time (MM:SS) |
|-----------------------------------------------------|-----------------------|
| Rob & Bob unite over missing daughters | 00:43–01:13, 48:04 |
| Casey McLeod’s disappearance | 09:03–11:07 |
| Jennifer Marcum case overview | 24:35–27:31 |
| Kimball’s manipulation of Lori & FBI informant role | 04:26–15:50; 21:04–23:59|
| Justin Kimball’s injury ordeal | 35:33–43:10 |
| Discovery of Casey’s remains | 66:24–68:24 |
| The “deal with the devil” plea bargain | 70:05–71:49 |
| Family members speak in court | 77:30–78:42 |
| FBI Agent Schloff admits being duped | 80:36–81:13 |
| Estimate of unknown victims | 81:54–82:09 |
| Reflections from survivors | 82:27–83:02 |
Final Reflections
- This episode exposes not only the predatory evil of Scott Kimball but shines a light on the devastating ethical and procedural lapses in the justice system.
- The raw voices of parents, survivors, and officials add poignant depth.
- The story remains unfinished—victims are still missing, and lessons are being learned at a very high price.
Scott Kimball remains incarcerated, not eligible for parole until 2054. The search for further victims, above all Jennifer Marcum, continues.
For listeners interested in true crime, system failures, and the long shadow cast by betrayal, this episode is an unforgettable, expertly told cautionary tale.
