A&E spoke with Live PD host, legal analyst and author Dan Abrams.

Lori Orr Kovach, daughter of serial arsonist and murderer John Orr, who was 17 when her father was arrested, spoke with A&E about when she started doubting her father's innocence, testifying at his trial to help him avoid the death penalty and how his actions affected the rest of her life.

A&E looks at some of the most notorious twin wrongdoers, and explores the roots behind their shared skirmishes with the law.

Marcus Parks of 'The Last Podcast on the Left' thinks Casey Anthony got away with murder. He spoke with A&E True Crime about how he believes the crime went down—and why the focus on chloroform as the murder weapon was a big mistake.

Some criminals write 'fictional' books detailing murders they've committed or turn their own wanted posters into profile pics on Facebook.

With the premiere of the new A&E series Cults and Extreme Belief, A&E explores some big questions about the groups Heaven's Gate, the Moonies and the Rajneeshees.

Bodily fluids from dogs, cats and birds have helped solve several violent crimes in the U.S. and Canada.

Read an exclusive excerpt from the new book 'Little Shoes: The Sensational Depression-Era Murders That Became My Family's Secret,' by Pamela Everett, about the murder of her two young aunts and whether authorities punished the wrong man for the crime.

One of the young victims may have captured audio and photo clues that point toward the killer.

Dr. Mike Aamodt, forensic psychology professor at Radford University, on why female serial killers have declined over the years, why there was a big jump in serial killings in the U.S. between the 1960s and 1980s and his most surprising finding in his research of serial killers.

Read an excerpt from the book 'Life After Darkness: Finding Healing and Happiness After the Cleveland Kidnappings,' by Michelle Knight, now known as Lily Rose Lee.

Over the last century, dozens of highly publicized child kidnappings have shocked the nation and ignited a public effort to prevent them. Now, missing-child awareness campaigns help spread the word more widely and quickly, resulting in finding many more of these kids.

Podcaster Brooke Gittings of 'Convicted,' 'Actual Innocence,' 'Cold Case Files: The Podcast,' and more on the importance of using podcasts to showcase oppression.

Sgt. Ryan Wisniewski talks about how drones are used by—and against—law enforcement today.

From Green River Killer, Gary Leon Ridgway to Ted Bundy to Harold Shipman and more, experts on serial killers tell A&E True Crime who was the 'worst' serial killer and why.

The Golden State Killer and the Zodiac Killer top the list.

Marcia Clark tells us why she was interested in investigating the mysterious death of Rebecca Zahau.

We spoke with David Hall, a forensic botanist, to discuss the information plant life leave behind.

Here are the complicated details of the case.

As smart technology advances, so does the means for authorities to detect crime. We look at some cases of criminal clues in the Wi-Fi age.

A fashion icon’s murder capped Cunanan’s killing spree.

Hernandez’s case raised questions far beyond football.

The Murdaugh murders exposed a web of deceit and financial crime.

Caylee Anthony’s disappearance shocked the nation in 2008.