Humpbacks are some of the most watched whales in the world, and yet so much of their lives remains a mystery.

The poet died when he was hit by a car in 1965. Everything else about his demise is a mystery.

“While its source remains something of a mystery, Stuxnet is the new face of 21st-century warfare: invisible, anonymous, and devastating.”

Gabrielle Williams is nine years old. She weighs just 12 pounds. The mystery of “syndrome x” and the girls who never age.

Fifty years ago, 180,000 whales vanished from the ocean. The mystery is not who killed them, but why.

On Hezbollah leader Imad Mughniyeh, “the world’s most wanted terrorist not named Osama bin Laden,” whose death five years ago remains a mystery.

In southwest Florida, the Myakka River Valley—a place of mystery and myth—is under threat of development.

The circus is gone. The presidency is ending. The mystery endures.

A newspaper writer’s attempt to solve the mystery of a homeless man who claims to be a once-famous boxer.

When Jeb Bush married his wife, it was the bravest thing he’d ever done. Her role in his life is still a mystery.

Everyone knows who killed Rodolfo Illanes. So why is his death such a mystery?

The Manhattan murder mystery spurred a tabloid drama that engulfed the city’s rich and powerful. But what really happened?

“I came to Weeki Wachee to sound the mystery of the mermaid, to find danger and sex and darkness and maybe hear my own deeps echoed back.”

How digital detectives unraveled the mystery of Olympic Destroyer—and why the next big attack will be even harder to crack.

I sometimes miss believing, and look toward the days when I was satisfied by testimony—by the feeling that there were encounters everywhere, all seeming to attest to some great mystery.

Eight of serial killer John Wayne Gacy’s victims remained a mystery, 35 years after his conviction. One man made it his mission to identify them.

In 1948, a man was found on a beach in South Australia. The circumstances of his death and his identity were rich with mystery. When an amateur sleuth became obsessed, he could not imagine where the clues would lead him.

Paul Wulff, a college football coach, was only 12 when his mother vanished from their family home. After 41 years of searching, he finally has been able to piece together some details of a mystery that upended both his life and family.

In 1935, a nine-year-old living in Switzerland became the King of Thailand. He would return to his homeland a decade later, and within six months he would be found shot to death in his bed. Though three servants were executed for the crime, a mystery endures.

An American mystery writer and an Italian journalist join forces to identify a serial killer that targeted couples having sex in cars in the rolling hills above Florence.

On a November morning, Olympic rower and financial advisor Harold Backer left for a bike ride and never returned. His disappearance remained a mystery – until letters began arriving at the homes of his investors.

Did a handsome young Green Beret doctor kill his pregnant wife and two daughters? Or, as he claims, did a group of candle-carrying hippies carry out a vicious home invasion while chanting “Acid is groovy, kill the pigs”? A mystery that spanned three decades.

When a car careened onto a baseball field in Sanford, Maine, during a Babe Ruth game in 2018, it set in motion a true-crime mystery 50 years in the making.

While the virus has ravaged rich nations, reported death rates in poorer ones remain relatively low. What probing this epidemiological mystery can tell us about global health.

When human blood overtakes a house amid racial turmoil in 1987 Atlanta, terrifying the family inside, a mystery opens up that persists to this day.