Marcia Clark of 'Marcia Clark Investigates the First 48' tells A&E True Crime what swayed her in determining who was really at fault for Bonny Lee Bakley's death.

Journalist and therapist Nikki Meredith has corresponded with two of Charles Manson's most infamous followers for decades: convicted murderers Leslie Van Houten and Patricia Krenwinkel. Meredith speaks about what the former cult members are like today.

How the serial killer's youth led to adult crimes.

True-crime author Harold Schechter, author of 'Hell's Princess: The Mystery of Belle Gunness, Butcher of Men,' on what made serial killer Belle Gunness unique and if she tricked everyone into believing she died.

The famous prosecutor on the negative effect the media had on the investigation into what really happened to Chandra Levy.

In 1991, four teenage girls were brutally murdered in Texas.

Marcia Clark of 'Marcia Clark Investigates the First 48' talks about why she believes Drew Peterson murdered his wife, Stacy Peterson.

From Slender Man to Robocop to Freddy Krueger and more, read how some killers were inspired by the gruesome actions of fictional villains.

Maggots, blowflies and other bugs help investigators determine time of death for a fresh corpse, and also help catch killers.

Samantha Sieber, vice president of Bio-Response Solutions, a company that makes alkaline hydrolysis machines for human disposal, discusses the process of bio cremation and how it's different than the way killers try to get rid of bodies.

Marcia Clark spoke with us about a shocking computer search from the Anthony home.

Serial killers often live fairly ordinary lives with normal employment, enabling them to blend in with colleagues. Their legitimate jobs also offer them one more key perk: an opportunity to help carry out or conceal their crimes, according to experts.

Nancy Grace of 'Grace vs. Abrams' spoke with us about whether the double-jeopardy rule should be abolished, recent cases the media isn't paying enough attention to and whether it's opportunistic to report on crime stories.

Tina Sherrow, a retired bomb technician and certified explosives specialist for the ATF, explains how package bombs work.

Prosecutor Marcia Clark spoke with us about the suffering she felt after the O.J. trial and why she'd make a good juror.

A look at the shocking murder of celebrity architect Stanford White by New York City millionaire, Harry Thaw at Madison Square Garden.

Gayani DeSilva, M.D., a child and adolescent psychiatrist and author, tells us about the warning signs of Munchausen syndrome.

Read an exclusive excerpt about the early life of one of Charles Manson's female followers from The Manson Women and Me: Monsters, Morality, and Murder, by Nikki Meredith.

Bloodstain pattern analysts on how the science works and why some are skeptical about how it's used in criminal cases.

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