Can Karen Navarra’s Fitbit explain her murder?

They were an organized group of ex-strippers, plus a few role players recruited from Craigslist. They fished for marks in strip clubs, Wall Street cocktail bars, and even TGI Fridays, and then lured them to strip clubs. The marks woke up with little memory of the night before and their credit cards maxed out.

A woman is accused of lying about being raped. Years later and several states away, the story changed.

An unarmed man, a cop charged with murder, and the challenge of policing mental illness.

When he was 2, Strider was severely beaten by his mother’s boyfriend. Today, at 6, Strider lives with his grandparents in rural Maine, in and out of poverty, trying to make it.

In the days after 9/11, a photo of an unknown man falling from the South Tower appeared in publications across the globe. This is the story of that photograph, and of the search to find the man pictured in it.

The M.I.T. Media Lab knew Epstein was a convicted sex offender. They asked for his help anyway, then covered their tracks.

He helped build an artists’ utopia. Now he faces trial for 36 deaths there.

Joe Exotic bred lions, tigers, and ligers at his roadside zoo. He was a modern Barnum who found an equally extraordinary nemesis.

In 2008, a federally owned power plant spewed coal sludge over 300 acres in Tennessee. Now, 40 people who helped clean up the mess are dead and 300 ill.

Joe Ford, car detective, searches the world for stolen rare automobiles on the black market.

On life as a police patrolman.

How an obsession with school shooters led to a murder plot.

A tale of missing money, heated lunchroom arguments, and flaxseed pizza crusts.

A Texas con artist made millions promising prisoners’ families the thing they wanted most: to bring their children home.

You’ve never heard of her, but somewhere in America, a top-secret investigator known as the Savant is infiltrating online hate groups to take down the most violent men in the country.

Adapted by the author of “Black Hawk Down.”

“The gun debate would change in an instant if Americans witnessed the horrors that trauma surgeons confront everyday.”

For more than 40 years, a former Olympian allegedly has been molesting boys and young men. Now, they’re speaking out.

On lawyer Alan Dershowitz.

It took only a handful of people to wrongly convict Ed Ates of murder. It took an army to free him from prison. Now comes the hard part.

Paul Gonzales scammed his online dates into buying him expensive dinners. Then they made him pay.

He was a Harvard Law professor who taught a class on judgment, which made him an unlikely target for an elaborate paternity scheme that nearly cost him his house and family.

How a Northern Californian rapper ended up facing life after being hired to produce a CD titled Generations of United Norteños – Till Eternity that may have served as a recruiting tool for the prison gang Nuestra Familia.

Dozens of convicted criminals have been hired as cops in Alaska communities. Often, they are the only applicants. In Stebbins, every cop has a criminal record, including the chief.