For thirteen years, tragedy followed one suburban New York mother—until the truth finally emerged.

In this chilling episode of Serial Killer Files by Skoob, we uncover the disturbing case of Marybeth Tinning, a woman whose nine children died under mysterious circumstances between 1971 and 1985. Each death was explained away as illness, SIDS, or accident—until one autopsy exposed a horrifying pattern of infanticide.

Through a detailed timeline, psychological analysis, and forensic breakdown, this episode explores how medical blind spots, misplaced trust, and society’s assumptions about motherhood allowed a killer to hide in plain sight for over a decade. We examine the warning signs that were missed, the psychology behind Munchausen syndrome by proxy, and why justice came far too late.

This is not just a story about one woman—but a system that failed nine innocent children.

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In the early 1900s, long before criminal profiling or modern forensics, one killer changed true crime forever. John Frank Hickey — known as The Postcard Killer — didn’t just murder. He wrote letters.

In this chilling episode of Serial Killer Files by Skoob, we uncover the terrifying story of a man who taunted police, tormented grieving families, and mailed detailed confessions of his crimes. From his violent childhood and first calculated murder to the brutal killing of seven-year-old Joey Joseph, Hickey’s postcards revealed a mind driven by control, manipulation, and a disturbing need to be seen.

You’ll hear how investigators tracked him through handwriting analysis, how his own letters sealed his fate, and why this case is considered one of America’s earliest serial killer investigations. Even more disturbing are the unanswered questions — how many victims were there really, and how close did he come to getting away with everything?

Before modern crime labs… before criminal psychology… there was The Postcard Killer.

Before we dive in, don’t forget — you can access all Skoob shows, bonus content, and exclusive deep-dive episodes on the Skoob App, and through https://linktr.ee/skoob.ai

👉 Follow Serial Killer Files by Skoob on Apple Podcasts and Spotify, and hit subscribe on YouTube for more episodes like this.

Tune in for more thought-provoking stories, deep dives, and true crime cases that keep you hooked.

Richard Cottingham lived a double life that fooled everyone around him. By day, he was a quiet computer operator, husband, and father in suburban New Jersey. By night, he became one of the most brutal serial killers in American history—known as The Torso Killer.

In this chilling episode of Serial Killer Files by Skoob, host Arthur Morgan takes you deep inside the psychology, methods, and hidden history of Richard Cottingham. From the dark streets of 1970s Times Square to motel rooms across New York and New Jersey, we explore how Cottingham hunted vulnerable women, erased their identities, and evaded justice for decades.

You’ll hear the full story behind the infamous torso murders, the shocking crime scenes, his eventual capture, and the late-life confessions that are still uncovering new victims today. This is a disturbing deep dive into sadistic violence, criminal psychology, and how a monster hid in plain sight for over fifteen years.

Before we dive in, don’t forget—you can access all Skoob shows, bonus content, and exclusive deep-dive episodes on the Skoob App, and through linktr.ee/skoob.ai.

Follow Serial Killer Files by Skoob on Apple Podcasts and Spotify, and hit subscribe on YouTube for more episodes like this.

Tune in for more thought-provoking stories, deep dives, and investigations that will keep you hooked.