A missing persons case is a grueling ordeal for those who are left with nothing but questions as to the whereabouts of a loved one.

Michigan, both with its urban cores and vast wilderness is no stranger to missing persons. Flint has a disturbing epidemic of missing women and Michigan's northlands hold many mysteries.

Understanding the Missing 411 Phenomenon: Hallmarks and Hypotheses

There's a disturbing set of disappearances known as the Missing 411 cases. Compiled by author David Paulides, these cases are unexplained disappearances from remote areas like national parks. Proponents of the phenomenon seek to draw a connection between the cases - anything from aliens to different dimensions.

Others counter that going missing and succumbing to the dangers of nature (inhospitable environment, animal attacks, extreme weather) are the most plausible and simple answers to the disappearances.

READ MORE: This Grand Rapids Woman Escaped from Michigan Prisons Twice in the 1970s - She's Still At Large + A 28-Mile Long Antenna Hidden in Michigan's Upper Peninsula Once Communicated with Submarines Around the Globe

The Upper Peninsula Connection: Why Michigan's Wilderness Fits the Pattern

Paulides has focused on Michigan's Upper Peninsula, which fits the hallmark of the areas he investigates - highly rural, difficult terrain, and sparsely populated.

Missing person in deep forest
Photo by Blake Cheek on Unsplash
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Here are the cases from the UP:

👇🏼BELOW: Leading Theories About D.B. Cooper and 30 other unsolved mysteries +25 True Crime Locations: Then and Now +These are the Documented Hot Spots for the Disturbing 'Hum' Phenomenon Heard Around Michigan👇🏼

These cases involve missing outdoorsmen as well as two military personnel at the Kinross base.

More recently, there are the unexplained deaths from June 2025 at Isle Royale, which are still being investigated and stymying news media who feel they are being stonewalled by an impenetrable bureaucracy when digging for answers and updates in the case.

There are those who counter that the Missing 411 phenomenon is not valid and the author has cobbled together stories to build a narrative where one doesn't exist.

Leading Theories About D.B. Cooper and 30 other unsolved mysteries

Thanks to the American fascination with confounding unsolved cases, mystery is among the most popular genres of books, movies, and television. From heists and capers to murders and robberies, the world’s greatest unsolved mysteries spark media frenzies that grab headlines around the globe. Some cases compel so much public intrigue that the facts and theories surrounding them become the basis of books, movies, plays, and documentaries decades or even centuries after the cases go cold.

Gallery Credit: Stacker

25 True Crime Locations: What Do They Look Like Today?

Below, find out where 25 of the most infamous crimes in history took place — and what the locations are used for today. (If they've been left standing.)

These are the Documented Hot Spots for the Disturbing 'Hum' Phenomenon Heard Around Michigan

The Hum is a sonic phenomenon heard around the globe. It's often described as a persistent low rumble. For those who are susceptible to hearing it, it can be a constant, lifetime annoyance.
There are several spots around Michigan that can claim to be hot spots for the Hum.

Gallery Credit: Eric Meier