Crime Library: Criminal Minds and Methods

Mary Bell: England’s 10-year-old murderer

Mary Bell was convicted of strangling toddler Martin Brown on May 25, 1968, the day before her 11th birthday. She later left notes that claimed responsibility for the murder, but police dismissed the incident as a prank. After all, who could look at the angelic face of this child and ever imagine her to be one of the youngest serial killers ever discovered.

Daycare Worker Raped Babies While Boyfriend Directed on Phone

Ohio daycare worker Heather Koons would videotape herself molesting one and two year old babies all for her sick boyfriend, prosecutors say.

Dad Injects 4-Year-Old Son with Heroin

A woman found her soon-to-be ex-husband unconscious alongside their son, who he had injected with a cocktail of deadly drugs, including heroin.

Today in Crime History: Death of Zahra Baker

Though her stepmother later said 10-year-old Zahra died on September 24, 2010, she didn’t report her missing until October 9. Read the tragic story of a young girl whose fight with cancer was an inspiration to those around her, and whose gruesome murder garnered international attention.

Florida Couple Arrested for Pouring Boiling Water on their Daughter

Crime Library’s Nastacia Leshchinskaya contemplates a case where a Florida couple intentionally harmed their child with boiling water and asks “Why?”

Mother Sets Daughter on Fire in Louse Treatment Gone Horribly Wrong

An Oklahoma mother is behind bars after dousing her daughter with gasoline to get rid of some pesky lice in a home remedy that went almost as badly as one could expect. The child caught fire and wound up in the hospital with extensive burns to her upper body, while the mother wound up in police custody.

WATCH: Girl, 6, Victim of Severe Abuse, Discusses Torture and Murder

In shades eerily reminiscent of child killer Mary Bell we present Beth, 6, the victim of such severe physical and sexaul abuse as an infant, that she is unable to bond with another person or to feel love. She admits remorselessly and openly to physically torturing her baby brother and to wanting to kill him, to hoarding knives and other weapons, and to plotting to murder her entire family; to getting her only joy from hurting other people.

Man Charged With Setting Child on Fire, Filming it

A Saxonburg, Pa., man was arrested after an alleged sadistic attack on a child, 7, in which the boy was doused with an accelerant and filmed after the man’s son allegedly to set the victim’s shirt on fire.

The Torment and Tragedy of 10-Year-Old Jonathan James

Jonathan James died in July 2011 after he was deprived of water by his father and step mother for five days. Both have been charged with first-degree felony injury to a child. Jonathan’s step mother, Tina Alberson, was tried this January. His blind father, Michael James, who blames his wife for Jonathan’s death, awaits trial.

Gunn-Britt Ashfield: Mother Gives a Brutal Beating

IN 1993, 6-year-old John Ashfield was beaten to death. His mother, Gunn-Britt Ashfield instructed her other children, who witnessed the horrific abuse, to tell anyone who asked that John was attacked by a gang of teenage boys.