Jeanne Harrington’s marriage to Michael Gabel was on the rocks. The couple were constantly fighting and instead of talking it out Jeanne took things into her own hands… in more vicious ways.

Delpha Jo Spunaugle, greedy high school teacher, stages her husband’s murder to cash in on his life insurance.

Kim Coleman had a lot going for her - except control of her own emotions. Her idea of loving Brian was completely possessing him. Love would never survive her suspicious mind.

Opal Collins saw a victim in Ben - someone she could dominate and easily control.

Susan Russo was a Navy wife who ran a tight ship. But she had a secret life, and devised a way to profit off her husband’s substantial military life insurance.

They may look sweet, but these Deadly Women are full of spite. Teresa Perez seduces her 70-year-old sugar daddy, but becomes enraged when he won’t leave his wife.

A young Navy recruit falls for a fellow officer, but becomes overwhelmed by jealousy when she learns he is friendly with the mother of his child.

Miranda Barbour was just a teenager when she and newlywed husband Elytte committed the heinous act that led to the vile moniker of "Craigslist Killer".

Some women can’t resist boy toys. But fur flies when these women reveal they're "Killer Cougars.” 39-year-old Dr. Shirley Turner exposes some skeletons in her closet: a history of affairs with younger men all ending in rejection that Shirley could not handle.

Joyce was afraid of her husband finding out she had run his business into the ground.

Some women have short fuses- and when their blood boils, get out of their way.

Rejection was not something that this sociopathic woman could handle.

Murder has no age limit: a grandma’s need to control her grandson takes a deadly turn.

Some women like company when they take a life. Teenage lovers choose each other over the life of a loving grandmother.

These women think their men are worth more dead than alive. A countess clings to her riches through violent means.

When these women have scores to settle, they take matters into their own hands. A traumatized woman thinks she's an avenging angel.

Some women will do anything to win their man, even if it means killing and butchering the bodies of the competition.

A mother's role is to love and protect her children, but for some, that doesn't ring true. A Texas mom, Dena Schlosser, becomes delusional.

These femme fatales prey on their victims, killing them at random. We try to enter the mind of the female serial killer.

Murder has no age limit: a grandma’s need to control her grandson takes a deadly turn.

When some women lust for money, it costs family and friends more than their bank balance. Maureen McDermott: Los Angeles, California, April 28th 1985.

After losing the men who fathered her children, Diane Odell decided to use murder as her abortion, killing her newborn babies at birth.

Opal Collins saw a victim in Ben - someone she could dominate and easily control.

Stephanie Lazarus, California, 1986. As a police officer, no one suspected her as a murderer.

In 1995, Debora Green wanted to get back at her husband, so she burned down their home with their three children inside.

Gina Grant was a cheerleader, first female class president, and very intelligent. She was also a manipulating psychopath.

The Moors are a stretch of lonely highlands near Manchester in Northern England. For Myra Hindley and Ian Brady, the Moors a dumping ground for the bodies of their young victims.

When these women fell out of love they didn’t walk away; they chose a permanent separation with financial benefits.

Kim Coleman had a lot going for her - except control of her own emotions. Her idea of loving Brian was completely possessing him. Love would never survive her suspicious mind.

Angela Simpson, a street prostitute from Phoenix, Arizona saw herself as an avenging angel but in truth she was just a callous torturer.

Lynn is a seductress with killer tendencies. Her method of murder - poisoning with anti-freeze.

For a man who felt that size didn't matter, Raymond Fernandez was the perfect match for 200 pound Martha Beck. As they murdered as many as 17 women, Martha's love for Raymond stayed strong.