UNMARKED: A True Crime Podcast

Why Did Richard Speck Kill 8 Nurses? What His Psychology Reveals

36K views · 1d ago · 42:00

Why did Richard Speck murder eight student nurses in a single night—and what turned an apparently ordinary child into one of America's most notorious mass murderers? On July 13, 1966, Richard Speck enters a Chicago townhouse occupied by nine young women. Over the next several hours, he murders eight of them. The Richard Speck murders shock America. But the story of what happened that night is only part of the mystery.

Topics: Richard Speck: The Psychology Behind the Murders · The Childhood That Changed Everything · The Fantasies Behind the Violence · The Crimes Before the Headlines · Inside the Night of the Murders · The Survivor Who Brought Him Down

Philadelphia Serial Killer? The Funeral Home That Sold Body Parts

10K views · 4d ago · 14:58

What connects suspected Philadelphia serial killer R.C. Horsch to a Kensington funeral home involved in the illegal sale of hundreds of human bodies? This week, my investigation into the Philadelphia serial killer case takes an extraordinary turn. I've been digging into the history of the Garzone Funeral Home, a Philadelphia mortuary connected to one of the most disturbing body-parts trafficking scandals in American history.

I Spoke to the Detective Who Hunted a Serial Killer Couple — What He Revealed

63K views · 1w ago · 41:49

How does a husband-and-wife couple become a team of serial killers—and was one of them more dangerous than the other? This episode is part of Psychopath2, a series of UNMARKED episodes examining what happens when serial killers work together.

Topics: The Killer Couple: Gerald and Charlene Gallego · The Making of Gerald Gallego · The Fantasy of Absolute Control · Charlene Gallego: Victim or Accomplice? · The Abductions Begin · The Witness Who Brought Them Down

Philadelphia Serial Killer? Bones Found at the House

16K views · 1w ago · 12:31

Have investigators finally uncovered physical evidence of murder at the Philadelphia home linked to suspected serial killer R.C. Horsch? And could the case have disturbing similarities to Jeffrey Dahmer and John Wayne Gacy?

The Criminologist Who Pioneered Geographic Profiling | Case Notes

8.2K views · 1w ago · 21:40

Guests: Case Notes, Dr. Kim Rossmo

Can the geography of a serial killer's crimes reveal where they live, how they hunt, and where they might strike next? In this episode of UNMARKED: Case Notes, I sit down with Dr. Kim Rossmo, the pioneering criminologist who developed modern geographic profiling, a technique that has changed the way police investigate serial murder.

The Journalist Who Got Sam Little to Confess — What She Discovered

28K views · 2w ago · 46:47

How does a serial killer murder women across America for more than four decades, repeatedly encounter law enforcement, and keep getting away with it? Samuel Little confessed to 93 murders, making him the most prolific serial killer in American history according to the FBI. But how many women did he actually kill? And how did he remain virtually undetected for so long?

Topics: The Serial Killer Nobody Stopped · The Making of Sam Little · The Fantasy Behind the Murders · A Killing Spree Across America · The Victims the System Overlooked · The Evidence That Finally Connected the Cases

Philadelphia Serial Killer? Who Are the Victims?

11K views · 2w ago · 16:12

Who are the victims in the suspected Philadelphia serial killer case? And how many people could be connected to R.C. Horsch? In this week's investigation, I'm turning my attention to the potential victims of R.C. Horsch, the man at the centre of the Philadelphia investigation following the discovery of human remains at a house in Olney in June 2026.

The FBI Profiler Who Helped Catch Ted Kaczynski Fact Checks Netflix’s Unabomber | Case Notes

8.1K views · 2w ago · 29:56

Guest: Case Notes

What did Netflix get wrong about Ted Kaczynski and the Unabomber investigation? Retired FBI Special Agent James Fitzgerald returns to fact-check Netflix’s new Unabomber movie—and he has serious problems with the way the story is told.

The FBI Agent Who Identified Ted Kaczynski — What He Discovered

51K views · 3w ago · 55:46

How does a teenage math genius become the Unabomber? And did controversial psychological experiments at Harvard play a role in creating one of America's most notorious domestic terrorists? For nearly two decades, Ted Kaczynski, known as the Unabomber, carried out a bombing campaign across the United States, killing three people and injuring 23 others. Then he demanded that newspapers publish his 35,000-word manifesto explaining why.

Topics: The Man Behind the Unabomber Myth · The Making of Ted Kaczynski · The Grievance That Became an Ideology · Inside the Unabomber’s Cabin · The Bombings Begin · The Language That Exposed Him

Philadelphia Serial Killer? When Did the Murders Begin?

38K views · 3w ago · 20:27

Is the suspected Philadelphia serial killer case much older than investigators realise? This week, I’m digging deeper into the life of R.C. Horsch—and I believe the timeline may be one of the most important parts of this story. While much of the attention has focused on the house in Olney where human remains were discovered in June 2026, my reporting is taking me back decades earlier.