Ontario Cold Cases - The Podcast

Ontario Cold Cases - The Podcast

Explore the unsolved mysteries of Ontario, Canada with our captivating true crime podcast, Ontario Cold Cases - The Podcast. Join our team of dedicated detectives from Nicoll Investigations as they investigate cold cases, homicides, missing persons, and other crimes, all across Canada. Delve into forgotten crimes and help us remember the victims and bring justice and hopefully peace, to the families. Tune in to our engaging exploration of unsolved mysteries today and discover the chilling stories that deserve to be remembered!

Episodes

July 24, 2025 13 mins
The Gardner Museum Heist  Episode 4: Current Status and Ongoing Efforts Will the Stolen Masterpieces Ever Return?

The Isabella Stewart Gardner Museum heist—a $500 million theft that shocked the world—remains unsolved, but hope burns eternal. In Episode 4: Current Status and Ongoing Efforts, the gripping finale of Ontario Cold Cases - Canada’s True Crime Podcast’s World True Crime Thursday series, host Jay Nicoll of Nicoll Investiga...

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Who Is She? A Mick & Mack Mystery
 Inspired by a True Story

Toronto, 1949.
 When a young wife and mother vanishes after her shift at a Danforth Avenue diner, detectives Mick McCathie and Mack MacNeely are called in to investigate. What begins as a routine missing persons case quickly turns into something darker: whispers of a man in a brown delivery truck, a suitcase found in the Don Valley, and a local mechanic who flees town ...

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The Gardener's Grim Harvest: The Bruce McArthur Story Episode 1: McArthur and the Victims

In the heart of Toronto’s Gay Village, a sanctuary turned sinister. Men began to vanish—fathers, dreamers, friends—leaving behind only whispers and weathered posters fluttering on lampposts. Unseen, a predator thrived among them: Bruce McArthur, the jovial landscaper whose hands shaped gardens and hid horrors.

By day, he trimmed lawns with pre...

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38 Years of Silence: The Hunt for Margaret McWilliam’s Killer A Routine Jog. A Brutal Attack. A Mystery That Refuses to Die.

On a warm August evening in 1987, 21-year-old Margaret McWilliam laced up her running shoes and stepped out for a jog in Toronto’s Warden Woods Park. It was a routine she knew well—a moment of peace in her busy life as a student and part-time worker. But that night, she wouldn’t return. Somewhere along the fa...

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38 Years of Silence: The Hunt for Margaret McWilliam’s Killer

A Routine Jog. A Brutal Attack. A Mystery That Refuses to Die.   August 27, 1987. A warm Toronto evening. Margaret McWilliam, a 21-year-old student with a bright future, laces up her running shoes for a jog in Warden Woods Park. It’s a routine she knows well—until it becomes her last. Ambushed. Dragged into the shadows. Brutally murdered. Nearly four decades later, her k...

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The Gardner Museum Heist Episode 3: The Mafia Connection 

Uncover the Mob’s Secrets in the Gardner Museum Heist!

Dive into the shadowy underworld of 1990s Boston with Ontario Cold Cases - Canada’s True Crime Podcast as we continue our World True Crime Thursday series. In Episode 3: The Mafia Connection, host Jay Nicoll of Nicoll Investigations pulls you into the heart of the Isabella Stewart Gardner Museum heist—the $500 million th...

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July 16, 2025 33 mins
The Restorer’s Redemption
 A Mick & Mack Mystery “A forged past. A burning truth. And a ghost who never died…”

When a priceless medieval manuscript is revealed to be a forgery during a glittering Toronto gallery gala, famed art restorer Nicholas Hawthorne becomes the prime suspect in a scandal that could destroy his career—and his freedom. But Nick insists the manuscript was real when it left his hands. Someone switched it. Som...

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The Unsolved Mystery of Superman's Fall: The Death of George Reeves The Man of Steel. The Hollywood Dream. The Unsolved Murder.

On a quiet summer morning in June 1959, Hollywood reeled from an impossible headline: Superman was dead. Not the invincible hero, but George Reeves, the beloved actor who brought him to life for millions. His death, officially ruled a suicide, quickly became Tinseltown's most enduring and unsettling myster...

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The Bloody Palm Print: Unmasking the Killer of Lawrence Cowan

In 1976, the quiet, close-knit community of Smiths Falls, Ontario, was shattered by a brutal act of violence. Lawrence Cowan, the beloved owner of Cowan's Dairy Bar—a cherished local landmark—was senselessly murdered during a masked armed robbery. The perpetrator vanished into the night, leaving behind a scene of horror and a single, chilling clue: a bloody palm print on...

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The Bloody Palm Print: Unmasking the Killer of Lawrence Cowan (Trailer)

In the quiet heart of Smiths Falls, Ontario, a chilling secret has festered for nearly five decades.

September 3rd, 1976. A beloved local figure, Lawrence Cowan, owner of the iconic Cowan's Dairy Bar, is brutally gunned down during a masked robbery. The killer vanishes, leaving behind a scene of unspeakable horror... and one crucial, blood-soaked clue.

A single...

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The Gardner Museum Heist Episode 2: Early Leads and Suspects The Hunt for Stolen Masterpieces Begins!

In the dead of night, they struck—a daring heist that stripped the Isabella Stewart Gardner Museum of $500 million in art. Now, the chase is on. Ontario Cold Cases - Canada’s True Crime Podcast takes you back to 1990 Boston in Episode 2: Early Leads and Suspects of our World True Crime Thursday series, hosted by Jay Nicoll of Nicol...

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July 9, 2025 33 mins
The Private Investigators Convention A Mick & Mack Mystery
 As heard on Ontario Cold Cases – Canada’s True Crime Podcast

They came to toast the best in the business. One of them came to kill.

Toronto, 1950. The chandeliers of the Royal York Hotel gleam, the band plays smooth jazz, and the world’s greatest private eyes gather for a convention of crime-solvers, cloak-and-dagger panels, and one very prestigious award.

But when a f...

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Tom Thomson: Life, Art, and Canada's Enduring Mystery The wilderness held his genius. It also claimed his life.

Tom Thomson, the visionary artist who captured the untamed soul of Canada, vanished into the depths of Algonquin Park in July 1917, just weeks shy of his 40th birthday. The official verdict: accidental drowning. But over a century later, the chilling questions persist, echoing through the very landscapes he immortalized.

...

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The Lost Boys of Pickering - A Canadian Tragedy 
A True Crime Mystery from Ontario Cold Cases – Canada’s True Crime Podcast

Six teenage friends. One late-night adventure. Zero answers.

In the early hours of St. Patrick’s Day 1995, six high school boys vanished from the icy shores of Lake Ontario. What began as a night of celebration in Pickering, Ontario quickly turned into one of Canada’s most baffling mysteries. They were seen o...

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The Lost Boys of Pickering - A Canadian Tragedy (Trailer)


Six teenage boys.


A stolen boat.


A freezing lake in the middle of the night.


And then… nothing.

On St. Patrick’s Day, 1995, six friends from Pickering vanished without a trace. No bodies. No wreckage. Not a single answer.

Was it a tragic accident?
 Or something far more sinister?

Join myself, Jay Nicoll of Nicoll Investigations, this Sunday, July 6th as we unravel one o...

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The Gardner Museum Heist, Episode 1: The Heist The Heist That Shook the World

In the early hours of March 18, 1990, as Boston reeled from St. Patrick’s Day revelry, two men in police uniforms slipped into the Isabella Stewart Gardner Museum. In a brazen 81-minute spree, they outsmarted lax security, duped the night guards, and made off with 13 irreplaceable masterpieces—works by Rembrandt, Vermeer, and Degas—valued at an astonishin...

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July 2, 2025 37 mins
Murder at Maple Leaf Stadium
 A Mick & Mack Mystery 
Toronto, 1949. The crowd roars. The bat cracks. And a body hits the dirt.

Slugger Johnny “Jolt” Jensen rounds third under the glow of the Maple Leaf Stadium lights—only to collapse dead at home plate. What looked like a thrilling game turns into a deadly scandal as whispers of poison, gambling, and game-fixing ripple through the stands.

Detectives Mick McCathie and Mack MacN...

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Hidden Horror: The Adam Strong Investigation

In the quiet city of Oshawa, Ontario, a seemingly ordinary man hid a monstrous secret. Adam Strong, a reclusive basement dweller, was a predator who preyed on the vulnerable. His victims, Rori Hache and Kandis Fitzpatrick, were young women with bright futures, their lives tragically cut short. When a plumber’s gruesome discovery led to Strong’s arrest, it marked the beginning of a harrow...

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June 30, 2025 4 mins
Siding with Bad Guys Activists targeting revolutionary crime-fighting tool

“The most terrifying words in the English language are: I’m from the government and I’m here to help.”— Former U.S. President Ronald Reagan

Particularly if you’re a crime victim in Canada.

One of the most revolutionary developments in solving murders, sex assaults, and identifying John and Jane Does has now come under the scrutiny of the Information and Priv...

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June 29, 2025 16 mins
The Enduring Mystery of Mistie Murray

On a warm spring evening in May 1995, 16-year-old Mistie Murray stepped out of her dance class in the quiet town of Goderich, Ontario—and vanished into the night. No footsteps, no witnesses, no trace. What happened next would shatter a family, stun a close-knit community, and leave a mystery that has defied answers for nearly three decades.

In this pulse-pounding episode of Ontario Cold Cases -...

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