Trevor McDonald and the Killer Nurse

Aileen Wuornos remains a rarity: a female serial killer. From childhood abuse to death-row revelations, this documentary revisits her life and crimes.

New exclusive access and never before heard testimony gives a unique insight into the mind of America's most notorious serial killer, Ted Bundy. Breathtaking archive from the time and the voice of Bundy himself, reveals the monster inside the man.

An engaging and thought-provoking look at Lucy Letby, the former nurse serving life in prison after being convicted of the murders of seven infants and the attempted murders of seven others.

A string of threatening emails escalates into a revenge plot involving a newly married US marshal and his ex-girlfriend.

Legendary journalist Gay Talese unmasks a motel owner who spied on his guests for decades. But his bombshell story soon becomes a scandal of its own.

A teen slams her car into a building, killing her boyfriend and his friend. What seems like a tragic accident becomes a murder case.

Raised by a man leading a monstrous double life, the daughter of the BTK serial killer shares her chilling story.

Police pull over a woman who claims she just gave birth. But the baby — and the blood — aren't hers. Twisted lies unravel in this true-crime documentary.

Documentary filmmaker Amy Berg investigates the life of 30-year pedophile Father Oliver O'Grady and exposes the corruption inside the Catholic Church that allowed him to abuse countless children. Victims' stories and a disturbing interview with O'Grady offer a view into the troubled mind of the spiritual leader who moved from parish to parish gaining trust ... all the while betraying so many.

Charlie Cullen was an experienced registered nurse, trusted and beloved by his colleagues at Somerset Medical Center in New Jersey. He is also one of history’s most prolific serial killers, with a body count potentially numbering in the hundreds across multiple medical facilities in the Northeast.

In the mid-aughts, Dateline NBC's To Catch a Predator drew millions of weekly viewers to watch sting operations: men planning to meet minors for sex would instead be confronted by polished host Chris Hansen, then by the police — all on hidden camera.

Child abuse, mental illness, and forbidden love converge in this mystery involving a mother and daughter who were thought to be living a fairy tale life that turned out to be a living nightmare.