Horror

Shocking HBO Max Documentary Enters The World’s Most Dangerous Amusement

Shocking HBO Max Documentary Enters The World’s Most Dangerous Amusement
Class Action Park

In the opening of the HBO Max original documentary Class Action Park, a commentator remarks “[Action Park] was a place where death was tolerated…” Another says, “It starts out with people having fun and by the end, crimes have been committed, cover-ups have happened….” And to be fair, that’s really just the tip of the iceberg. 

Class Action Park is a darkly comedic documentary that chronicles the rise and subsequent fall of a no-holds-barred amusement park. Action Park in Vernon, New Jersey was one of the very first modern water parks. As such, there were far fewer checks and balances in place to ensure the safety of all. The park’s management team largely consisted of children under the age of 18. And people as young as 14 were operating rides (which was against New Jersey law). Accordingly, no less than six patrons lost their lives during the heyday of the park and countless others came away with varying degrees of injuries. 

One of the most surprising details regarding the early days of Action Park is that it was born from two stock brokers getting suspended by the SEC for “selling worthless securities”. That led to disgraced stock broker Gene Mulvihill purchasing a couple of ski resorts in Vernon, New Jersey. After acquiring the resorts, Gene turned to his friend and fellow disgraced stock broker, Robert Brennan for an investment. From there, Gene proceeded to turn the ski resort into a water park during the summer months. The chaos that ensued thereafter was monumental. 

Also See: This Disturbing Documentary About Religion Is More Shocking Than Any Horror Film  

With an origin story like that, Action Park likely never stood a chance of existing as a reputable outfit. You have two unscrupulous businesspeople who were relieved of their duties on Wall Street and turned loose to build a theme park with roughly zero oversight. The park’s genesis began in the late ‘70s, making it among the first of its kind.

Today, there are safety procedures and protocols in place for attractions of this nature. But in the early days of Action Park, you had people saying “What if we built a water slide with a loop in it, like a roller coaster? We’ll call it Cannonball Loop.” That idea made it beyond the brainstorming stage and the slide was actually built. According to former employees, the park’s founder could be seen waving around wads of cash and encouraging the park’s teenage employees to ‘test’ his death trap of a creation. 

Action Park Cannonball Loop - Shocking HBO Max Documentary Enters The World's Most Dangerous Amusement Park

Of the test subjects, several of them knocked their teeth out going through the loop. But to Gene Mulvihill (fondly known by park employees as Uncle Gene) it was just the cost of doing business. Many of the rides were designed by park employees that had no engineering background. These were just people with ideas. Some of them good. Some of them really, really bad. And that’s how Action Park ended up with a staggering death toll and a countless number of patrons (and employees) walking away with serious injuries. 

Also Read: The Top 5 Most Disturbing Documentaries Streaming On HBO Max Right Now

Another attraction that came dangerously close to opening to the public was called The Man in the Ball in the Ball. This ride consisted of a giant ball (within a ball) that ran down a track made of PVC pipe. The ride was safety tested on a particularly hot day. Accordingly, the heat caused the PVC pipe track to expand and the ball was dislodged on its way down the track. The test pilot rolled down a slope and onto the freeway, eventually landing in a swamp off the Interstate. That experience would have inspired most to take a long, hard look at safety protocols. But Action Park wasn’t owned by most people. 

When I say Action Park wasn’t owned by most people, I’m dead serious. Founder Gene Mulvihill was rumored to keep a machine gun in his desk drawer. I normally take a scuttlebutt like that with a grain of salt. But in this case, I wouldn’t be surprised. He clearly had his own way of doing things and he wasn’t about to let anyone stand in his way. 

See Also: This Netflix True Crime Documentary Will Leave You Speechless and Outraged

Gene deliberately ran his attractions with an outspoken disdain for rules and didn’t believe in insurance. So, rather than bite the bullet and secure insurance coverage, he created a fake insurance company (through which he later proceeded to launder money). You simply cannot make this stuff up.  

While almost every detail revealed about the park during the course of the documentary is horrifying and the negligence that led to the loss of multiple lives is simply unconscionable, the story behind it is absolutely fascinating. And just as you think you’ve seen and heard the worst of what transpired during the park’s years of operation, you quickly realize that you haven’t heard the half of it. Seriously, this write-up only covers a small portion of the horrors that transpired. So, with that in mind, if you’re keen to check out Class Action Park, it is available to stream exclusively on HBO Max. 

Tags: Class Action Park Dark Documentaries HBO Max
Sign up for The Harbinger a Dread Central Newsletter

Read The Full Article Here

The Pitt vs. ER Lawsuit: Are the Medical Dramas Similar?
The Pitt vs. ER Lawsuit: Are the Medical Dramas Similar?
He Was A Very Powerful Figure In Town, And No One Wanted To Get On His Bad Side: 11 Famous People Who Allegedly Sabotaged Their Partners Careers
He Was A Very Powerful Figure In Town, And No One Wanted To Get On His Bad Side: 11 Famous People Who Allegedly Sabotaged Their Partners Careers
Man Reportedly Stabbed in the Neck During Halloween Party at Jamie Foxxs Home, Suspect Arrested
Man Reportedly Stabbed in the Neck During Halloween Party at Jamie Foxxs Home, Suspect Arrested
The Mosquito Bowl Cast: Meet the Stars From Nicholas Galitzine to Bill Skarsgård
The Mosquito Bowl Cast: Meet the Stars From Nicholas Galitzine to Bill Skarsgård
NBC Affiliate Anchor Is Leaving Just Months After Joining Station
NBC Affiliate Anchor Is Leaving Just Months After Joining Station
Women on the Sidelines: Offside at 20
Women on the Sidelines: Offside at 20
Vin Diesel & Christopher Nolans Photo Has Fast 11 Fans Wanting the Same Thing
Vin Diesel & Christopher Nolans Photo Has Fast 11 Fans Wanting the Same Thing
Martin McDonagh: Avoidance of sentiment is always paramount
Martin McDonagh: Avoidance of sentiment is always paramount
9 Shows Like Campus Drivers to Watch Next
9 Shows Like Campus Drivers to Watch Next
Ask Matt: Send in More (and Funnier) Clowns, Getting Fired on Abbott, Raves for Cupertino & More
Ask Matt: Send in More (and Funnier) Clowns, Getting Fired on Abbott, Raves for Cupertino & More
Lit Hub Daily: November 10, 2026
Lit Hub Daily: November 10, 2026
Beyond Alaskas Window
Beyond Alaskas Window
Momo vs. Momo: How Momo Boyd Is Finding Her Own Voice While Staying True to Infinity Song — Thats Always Been the Dream
Momo vs. Momo: How Momo Boyd Is Finding Her Own Voice While Staying True to Infinity Song — Thats Always Been the Dream
Damage Control: Why Warner Bros. Keeps Making a Mess of the DC Universe
Damage Control: Why Warner Bros. Keeps Making a Mess of the DC Universe
Rocky Kramer’s Rock & Roll Tuesdays Presents “Con Man” On Tuesday, November 10th, 2026 7 PM PT on Twitch
Rocky Kramer’s Rock & Roll Tuesdays Presents “Con Man” On Tuesday, November 10th, 2026 7 PM PT on Twitch
Bassvictim, Chxrry, Boys Noize, and More: This Weeks Pitchfork Selects Playlist
Bassvictim, Chxrry, Boys Noize, and More: This Weeks Pitchfork Selects Playlist
Voting has Begun for the 2026 Goodreads Choice Awards
Voting has Begun for the 2026 Goodreads Choice Awards
The November Oprahs Book Club Reading Selection
The November Oprahs Book Club Reading Selection
Heres the Book That Won the 2026 Booker Prize Winner
Heres the Book That Won the 2026 Booker Prize Winner
Electrifying Mysteries and Riveting Thrillers: New Releases to Keep You Guessing – NewInBooks
Electrifying Mysteries and Riveting Thrillers: New Releases to Keep You Guessing – NewInBooks
These Chanel Fine Jewelry Pieces Are Made to Become Future Heirlooms
These Chanel Fine Jewelry Pieces Are Made to Become Future Heirlooms
How Jennifer Zuccarini of Fleur du Mal Revolutionized Lingerie Styling
How Jennifer Zuccarini of Fleur du Mal Revolutionized Lingerie Styling
5 Dated Wardrobe Staples to Skip in 2027 (and What to Buy)
5 Dated Wardrobe Staples to Skip in 2027 (and What to Buy)
Denim is Timeless, But This 90s Jeans Trend is Set to Take Over in 2027
Denim is Timeless, But This 90s Jeans Trend is Set to Take Over in 2027
The Awakening Review: Colombian Military Horror That Peaks Too Early
The Awakening Review: Colombian Military Horror That Peaks Too Early
Naked Alien Massacre Punishes the Wrong Sin, and That Is the Whole Joke
Naked Alien Massacre Punishes the Wrong Sin, and That Is the Whole Joke
Letitia Wright Horror In Her Shadow Begins in a Basement
Letitia Wright Horror In Her Shadow Begins in a Basement
Killing Time Sets 2027 Release With Freddie Prinze Jr.
Killing Time Sets 2027 Release With Freddie Prinze Jr.