When emotional changes start to become overwhelming the results can be bad.

Some women are so cold and brutal they don't need an excuse to murder.

Kirsten Costas reminds her classmate Bernadette Protti of everything she wants, but could never have. The solution to the problem was to annihilate the source of the pain by stabbing Kirsten to death. Karen Severson and Laura Doyle were friends with Missy Avila since grade school, but as they grow older, Missy blossoms into a beautiful, charming young lady while Karen becomes a single mother. Teenage angst trumps childhood friendship when Karen and Laura take Missy into the woods, beat her up, cut her hair and drown her in the lake. The crime is unsolved for years until an unexpected confession appears as if out of nowhere. Kelly Fuller (age 18) is enraged at 15-year-old Jessica Lang, who is her ex's new girlfriend. Jessica, who's more interested in her apprenticeship and family than any boy, pays for her friendliness with her life after Kelly decides to end the source of jealousy permanently by stabbing her almost 50 times.

For an English Rose, husbands equal dollar signs; for a serial killer, feeding her family pays; for a businesswoman, a missing mother keeps the checks coming.

Susan Wright is supposedly abused and controlled by her husband, who spends days having affairs with strippers and using drugs while Susan raises their two young kids. Susan doesn't believe in divorce and feels the only way out is murder. Alice Mitchell has plans of moving to Boston with her lover Freda Ward and living as a married couple disguised as a man, but when Freda's family stops those plans dead in their tracks and forbids her to see Alice, an obsession begins leading Alice to destroy the one she cherished most. Larissa Schuster is many things - a biochemist,an over-achiever... and a bully. She carries on affairs behind her husband's back and when he leaves the family home – instead of continuing her affairs, she permanently dissolves their marriage by dissolving Tim's body in a blue barrel of acid in the garage.

To the Master Manipulator we are all just the pawns in their game. Men, children, friends... anything is possible. For these women, they manipulate others to kill for them... but these girls didn't get away.

When these women meet their mate they gain a partner in crime and life.

Examining crimes of passion, including an office affair that turned toxic and a lover who used the Internet as a murder weapon.

Dig into the world of these Deadly Women... and in their "DIY Burial," you will find blood and bone.

Unsuspecting victims get too close to their enemies.

Greed is one of the oldest motives for murder, and these deadly women are no exception. They'll do anything to satisfy their need for cash. They stalk their victims throughout society - rich and poor. This is the dangerous world of Fortune Tellers.

These young women plans for revenge ended in murder.

While their sisters chose a life of sensible, suburban motherhood, these Deadly Women chose a life of crime. Gangsters, thieves, drug-lords. They lived with the thrills, the danger, and the deadly consequences of being outlaws.

One woman's murders go undetected for years; Granny's husbands keep dying; a divorcee uses friendship to kill.

Men are blinded by love and passion when it comes to the women in their lives.

A mother who manipulated her son into committing murder, a woman who made a deadly request of her children, and a daughter who was used as a lure for a family business.

A mother's love turns bad when she betrays the innocence of her children.

In order to kill her father, Marjorie Diehl-Armstrong had to make enough money to hire a hit-man and decided to use a collar bomb as a weapon. Little did her accomplice know the bomb on his chest wasn't a decoy. Rosie Alfaro stabbed her friend's 9-year-old sister over 50 times to rob the house and trade the items and money stolen in exchange for drugs and booze. To inherit her kind neighbor's farm, Kim Snibson brutally murdered the couple and got two men to do the work for her.

These women discover that for them death has benefits.

Tina Powell and LaFonda Foster are drunk and high when they go on a killing spree, taking five friends hostage and brutally killing them all one by one in different ways. The night proves to be the deadliest in the history of Lexington, Kentucky. Melinda Harmon-Raisch is a Christian housewife who falls for a star-student at a nearby college. Since she views divorce sinful, she has her lover murder her husband so they can be together and they pin it on two black people. Strangely enough, the two go on to marry other people and the secret is hidden for a decade. After losing her husband and two sons in the Melbourne gang wars, crime family queen and professional thief Judy Moran tries to save her own skin by executing her brother-in-law.

A wronged wife who murdered her ex-husband, a jealous girlfriend who took revenge on her rival, and a girl who killed her own father.

Tiffany Cole kidnapped and buried alive an elderly couple who had helped care for her as her father was dying from terminal cancer. Seeking initiation into the notorious street gang, the Bloods, Shonda Walter butchered a Pearl Harbor survivor with an ax without mercy. And bipolar Sunday School teacher Melissa Huckaby drugged her young daughter's 8-year-old friend out of jealousy and raped her using a rolling pin.

When these deadly women are loved they shine, but push them too far and they turn dangerous.

Jane Andrews is appointed the wardrobe specialist for a Duchess in England and after losing her job, her only connection to the high life of England is her boyfriend. When he breaks things off after she begins to act clingy, she murders him in his bed. Shana Parkinson had a volatile temper that prompted her husband to leave her for another woman. Instead of wanting her husband to be happy, she wants him dead and makes that become a reality by stabbing him and his new fiancee to death (Greg sustained twice as many stab wounds as Karen). However, she gets caught quickly due to an unlikely eyewitness who saw the murders unfold. Jennifer Bailey is an impressionable girl whose first love is with a modern-day pagan who plants ideas in her mind. Their plans of running off to Canada together are cut short when her mother forbids them to speak and they respond by brutally murdering her.

Jealous of the attention given to her children, Darlie Routier stabbed two of her sons and staged a break in to get that attention back. Frances Newton cold-heartedly shot her husband and two young children for life insurance money. Susan Eubanks got revenge against her ex-husbands by shooting and killing her four sons in the order they came into her life, she currently awaits execution.

Apart, a woman and a man can be innocent, safe to society. But when some couples unite, they spark a terrible urge for destruction. Happy couples become deadly teams, intent on one goal--murder.

The path towards revenge can sometimes lead to murder. It can be quick,fiery and violent. When these women were crossed, they didn't take it lying down. Murder was their answer.

Some women are just cold-hearted and attack "Without Pity". A mother who wants another baby is prepared to steal from the womb; a grandmother's outward devotion masks his sadistic nature; and an unhappy divorcee takes revenge on her own flesh and blood.

Women who brutally kill their their victims without a second thought.

The stakes are high in the game of love.

Women kill the men that love them.

Christina Walters defies the odds by becoming a gang leader at age 20 and attempts to earn the Crips' tear tattoo under an eye meaning they've killed. As deadly initiation, Christina and her gang kidnap three women in two separate abductions and shoot them like lambs to the slaughter. The seemingly senseless murders would've remained unsolved if it weren't for one thing – one woman is still alive. Judith Neelley and her husband Alvin met and after marrying when she was 15, they begin a crime spree. After being released on armed robbery charges, Judith and Alvin commit the most heinous of crimes by abducting, raping, torturing and murdering two women, one of them a 13-year-old girl. One extraordinary breakthrough leads to an eyewitness confession and one detail ultimately leads to their arrest. Irene Maslin gladly plans to help kill her friend's on-again-off-again boyfriend by injecting him with battery acid.

While marriage is meant to be for life, so often it ends in divorce. Their loving husbands were there 'to have and to hold,' but these wives had murderous minds on a different marriage vow: 'till death do us part.'

For these diabolical women, two's company and three is a murder in the making.

When a former police officer is dumped she takes the law into her own hands; a quiet housewife buries her marriage problems in the garden; and an excited fiancée turns into the worst kind of bridezilla.

The crimes of psychopathic killers, including a nurse who betrayed a patient's trust to indulge her deadly desires, and a brutal babysitter.

Women who killed their husbands are profiled.

A scorned lover weaves a web of lies; a Goth teenager orders a reign of terror; a gold-digger buries secrets.

Stories of three women who are so deceptive and entitled - rules do not apply.

Greed and lust drove these Deadly Women to commit "Unspeakable Acts."

Sometimes the most dangerous place to be is in the arms of your loved one.

Two women team up to mastermind a murder.

A sex-obsessed housewife who lured girls to their graves, a couple who took pleasure in killing, and a woman who swapped single motherhood for a violent relationship.

The case of 10-year-old Mary Bell who strangled toddlers, a playground plot that ended in murder and a teenage passion that turned to bloody rage.

Innocent blood spills when these Deadly Women reach their Tipping Point.

Women that convince their closest relatives to become party to murder.

Victims dealing with the ''death knock'' from deadly women.

Within hours of meeting in juvenile detention, troubled teens Cindy Collier and Shirley Wolf begin to plan a life together and step one in the plan included killing somebody random. Their victim of choice- a trusting old lady who they spend hours talking with about her family before stabbing her. Lorraine Thorpe sees a father figure in a 41 year-old in her group of alcoholics, who violently beats his girlfriend and with 15-year-old Lorraine by his side, he murders her and when Lorraine's father becomes suspicious, they kill him too. Courtney Dunkin was adopted by her grandparents and after her grandfather passed away, she gets into the goth movement. Her new style doesn't mesh with the caring Christian lifestyle, when her restrictions become too much, Courtney kisses her grandma goodnight one evening and then shoots her.

Women exact their vengeance when the kill in cold blood.

Eyes are the windows to the soul, but not for these demented women.

A woman seduces both men and women; a churchgoer discovers a new faith; and a matriarch rules with an iron rod.

The stakes are high and the chips are down when these Deadly Women decide to "Cash In."

They are "Bad To The Bone"... it’s only a matter of time before they become Deadly Women.

Extraordinary cases of women who repay a parent's unconditional love with cold-hearted betrayal.

These Deadly Women satisfied their blood lust within the family... they were "Killer In-Laws."

The case of 17th-century serial killer Erzsebet Bathory - a Hungarian aristocrat who is said to have murdered 600 of her servants in an attempt to achieve eternal youth

After learning her first husband had an illegitimate child, Raynella Dossett Leath begins to control every aspect of her new husband life, including his death when she's overcome by greed. Soon afterwards, another shocking secret is revealed. Margaret Rudin was sick of her husband wasting all of his money on alcohol and guns (money that she wants to spend) that she kills him and dismembers him before going on the run. Linda Lou Charbonneau got sick of her first husband and married his nephew; when neither man's financial status met Linda's satisfaction, her solution was to kill both of them.

Women turn on their own families in acts of revenge and greed.

Battered housewife Amber Cummings shot her white supremacist, child-pornography loving, Nazi obsessed husband to save her daughter from being sexually assaulted. Consumed with greed, alcoholic con-artist Kate Webster murders her employer, spins a web of lies to cover up her crime and disposes of the body in the most gruesome way possible. Sick of having to constantly care for her needy, terminally-ill husband, who had only weeks to live, Wendi Andriano got impatient waiting for him to die and sped things up by killing him herself.

A Texan goes to any length to keep her man; a mother does the unthinkable to her tiny son.

Women's cruel actions are spotlighted.

Sometimes, a woman has a killer instinct when she meets her other half. These wicked women exert control over their partners to become the master puppeteer of a murderous plot. Acting as two on behalf of one, these Deadly Women are 'Double Trouble'.

A California woman commits a deadly sin rather than live with an immoral husband; a housewife drives two women to join a murderous poison ring.

How a woman took a baby from an expectant mother's womb, two girls killed to protect their friendship, and a killer committed her crimes for a serial murderer she loved.

Former FBI criminal profiler Candice DeLong delves into the minds of female killers.

These women think their men are worth more dead than alive. A scorned Southern belle tries to cash in on her ex's life; a countess clings to her riches through violent means; and a mother of two trades her husband for another shot at the good life.

A secret addiction drives a young woman to sacrifice her wheelchair bound employer; a scheming caregiver betrays the man who trusts her; and a single mother’s desire for a better life leads to a brutal dismemberment.

A divorced woman fakes a home invasion; a mix of jealousy and alcohol affect a UK mother; and a drug kingpin eliminates the competition.

Women who sought revenge after bad breakups are profiled.

Some women have short fuses and when their blood boils get out of their way. A couple's New Year's resolution ends in a murderous rampage; a pious parish housekeeper hides a sinful secret and a Christmas drink between neighbors has a deadly hangover.

A mom locks up her daughter like she's a prisoner-of-war; a helpful neighbor quietly kills her community; lesbian lovers bash and burn a complete stranger.

Jealousy can become an obsessive trait, even a deadly one.

For these heartless women envy is the deadliest sin. An obsessed mistress sacrifices her lover's wife; a young lover kills her girlfriend to keep her from the arms of another; and an angry cowgirl destroys her ex's life by destroying his family.

Spending most of her life in expensive British boarding schools, American teen Elizabeth Haysom is an honor student who has plans to study the arts, but her parents have other ideas and give her an ultimatum – take science and math classes at college or they won't pay for her to go to her dream school. Rebellion controls her mind and when she's had enough, she gets her boyfriend to destroy them both. Heather D'Aoust was the 15-year-old adopted daughter of a loving couple, but when she is caught engaging in sexual activity with a friend, she decides to kill her mother with a claw hammer. Nikki Reynolds grows up happy and wholesome, but that changes when she's dumped by her boyfriend. After spreading false rumors that she's pregnant, her mother seeks psychological help and constant arguing drives a wedge in the family. Planning to kill both parents, Nikki stabs her mom fatally, but is too broken up to finish the job and turns herself in.

Ladies that believe social status gives them a license to kill; they assume they are entitled to do it.

A middle-aged woman goes after an older man; an Army wife isn't satisfied with her husband; and a black widow poisons her mates.

These Deadly Women won’t let their men go... they "Cling ‘Til Death."

These women love to gamble; but when the money's all gone, the stakes turn deadly. A transgender woman is willing to kill for a new body; a mother and daughter trade a family member for cash; and a wife tries to bury her debts along with her husband.

For these women blood isn’t thicker than water. A teen sacrifices her family for an inheritance; an obsession with Hollywood memorabilia leads a recluse to kill her parents; and a soccer mom's social status is more important than her mother's life.

Respected midwife Elizabeth Brownrigg secretly abuses her servants and ruthlessly tortures, beats and starves them. It's not until one girl is found dying from numerous open sores that this woman is finally unmasked and she is branded a monster for centuries to come. Kerry Lyn Dalton discovers while she was in jail, her flatmate sold some of her belongings to pay for crystal meth, which both women take. Kerry, high on meth, responds by torturing Irene May to death via everything from electrocution to stabbing to bludgeoning. Martha Rendell moves in with her lover, who leaves his wife for her, but keeps their kids. Martha seems to have jumped out of a Grimm's fairy-tale as a wicked stepmother – she makes the children ill and pretends to swab their throats with medicine, which is really acid. Killing three kids, the forth one runs away and reveals she got pleasure from doing this.

Women who are after their mothers' cash are featured.

Sometimes beauty can mask the ugliest of truths.

A woman seeks revenge; an affair turns deadly; and a wealthy housewife hides secrets.

When life becomes a powder, these morally bereft women light the sparks.

Young female killers are spotlighted.

These Deadly Women are old but not wise. You have to watch your back when "Granny Gets a Gun."

When these women exposed their true selves, their men found out they'd been 'Sleeping With The Enemy.' A beauty queen tried to free herself from her family; an accountant's tryst turned deadly; & a valedictorian made sure her man couldn't leave.

The match is struck, the fuse is lit, and it’s only a matter of time before the "Anger Mismanagement" of these Deadly Women will see them explode.

These Deadly Women get their kicks from the suffering of others. They enjoy being on Death Watch.

The cases of Belle Gunness, who murdered her victims to reap financial rewards, and a carer from Connecticut who turned a home for the elderly into a death parlour

Home is where a killer lurks

It’s easy to keep friends and enemies close when they’re one and the same. These Deadly Women turn from "Friends To Foes."

Some women marry for money while others are prepared to murder for it.

Wives who murdered their husbands are profiled.

Kristin Stephens uses her husband’s money to fuel her gambling addiction; Brittney Dwyer convinces her roommate to drive to her grandfather’s home to search for money; a couple targets an employee to squelch their financial problems.

A bondage queen doles out punishment; a vengeful teenager ignites a blaze; and a doctor prescribes lethal cures.

A social worker can’t keep the lid on her possessive nature, a friendship is destroyed by jealous delusions, and young love leads to a violent end.

Some women can’t admit their failings and point the finger of blame at others.

Examining what caused three women to murder innocent people.

They look like sweet grannies but they prove murder has no age limit. A grandma's need to control her grandson takes a deadly turn; a retirement home romance meets a lethal end; and an aging gold-digger preys on her final victim.

These Deadly Women didn't grow old gracefully; they committed "Mid-Life Murder."

Friendships provide love and support, unless they turn toxic.