When Chris Regan started dating coworker Kelly Cochran, he knew she was married. But he had no idea of the deadly wedding day pact she had made with husband Jason. Chris had become entangled in a love triangle that would see not one, but two people lose their lives.

Amin Miah wanted a devout, homely wife to start a family with. Mahmuda Khatun wanted a career, a social life—and her family off her back. It was not the recipe for a happy marriage. Their differences irreconcilable, one of them would choose the violent way out.

Childhood sweethearts Lisa and Thomas Infante quickly grew apart, but their marriage continued to struggle on until Lisa made the fatal decision to leave.

The story of a man who murdered his first wife and staged a car crash, attempting to do the same to his second wife - all for life insurance money.

To others, Stephen Searle was a politician, veteran and pub landlord. To his wife Anne, he was a violent abuser. Only her death would expose his true nature.

When a bizarre, live-in arrangement between a married couple and their mistress goes south, a wife takes revenge by masterminding a twisted murder plot.

The chilling story of midwife and mother-of-four Hannegret Donnelly, who battered her husband to death with a rolling pin.

A look at the twisted case of a former airline pilot, who murdered his wife by deliberately crashing their car into a tree after disabling her airbag.

The murder of American politician Kathy Augustine, who died after being given a paralysing drug by her husband Chaz Higgs, a professional nurse.

The story of Denise Williams, who conspired with her lover to murder her husband, cover it up and collect the insurance money.

Unable to reconcile differences with his wife, paramedic Paul Novak tries to plan the perfect crime. In December 2013, firefighters responded to calls that Catherine Novak's house was burning down in the early hours of the morning.

The story of double-murderer Janbaz Tarin, who killed his ex-partner and her mother when they discovered he had a secret wife and children.

Kelly and George Worgan appear to be the perfect parents, but their marriage ends in murder. After strangling his wife, George left a note for his children which read `Daddy loves you.'

The story of a woman who teamed up with her lover to murder her husband, in the hope that they could both cash in on a hefty life insurance policy.

Chacey Poynter played the grieving wife when her veteran fire captain husband was shot to death. But investigators soon began to spot holes in her story.

After a decade of marriage, David Clark snapped and killed his wife in a brutal attack on one fateful New Year's Eve night.

Nat Fraser hits headlines when the evidence against him means he is jailed for the murder of his wife Arlene, despite no trace of her body ever being found.

Brian Burns claimed it was an accident, but the overwhelming evidence against him proved that Brian Burns killed his wife in a savage attack before trying to cover up the murder.

Lois Riess fatally shot her husband and went on the run to evade justice. But her determination to escape her gruesome past left another innocent victim dead.

The shocking story of a husband who opened fire on his estranged wife while sitting in a car outside their children's school.

The story of the vicious murder of Aliny Godinho, whose ex-husband Ricardo stabbed her to death as her three-year-old daughter watched on.

The story of a man who brutally shot his pregnant ex-wife with a crossbow, in a premeditated attack he plotted for three years prior.

When Frances Araiza met Bill Hall Jr, he was a 16-year-old with big dreams. Three decades later, they are grandparents with a multi-million empire. However, behind closed doors their marriage is heading for an explosive end.

After leaving an arranged marriage she claimed was abusive, Faria Khan could have moved on. But she wouldn't be satisfied until estranged husband Nawajid was dead. And she knew exactly who to ask to help.

Steven and Crystal McDowell were never a good match, but years after they split up, Steven kept telling himself that a reconciliation was near. Until Crystal suddenly disappeared during a deadly hurricane.

Glyn Dix met his second wife Hazel in prison while serving a sentence for murder. After his release, Dix could not resist his urge to kill again and chopped his wife's body into 16 pieces.

Pharmacist Mitesh Patel brutally murdered his wife Jessica after she discovered his secret affair and plans to elope with a man after years of deception, coercive behaviour, bullying and abuse.

A husband carried out the twisted murder of his wife and stashed her body under the floorboards - all so he could move in with the mistress that he'd been hiding in the garden shed.

The newly-wed wife of a Cleveland firefighter hatches a cunning plot to have him killed in order to cash in on his insurance money. Little did she know the recipient of the money was still the firefighter's ex wife.

Micah Rine Pate had hoped to patch up her failing marriage to Thomas, who was having an affair. Unfortunately for her he was not willing to fix their relationship and he choose violence when he brutally took her life.

Shele Danishefsky was found dead in her bathtub in 2009. Years later, her estranged husband was found guilty of killing her in a failed attempt to cash in on her million-dollar fortune.

The story of Kirstin Stephens, found guilty of brutally shooting her 65-year-old husband to death in 2014. Kirstin was having an extramarital affair and the couple was also having financial troubles.

A violent, estranged husband with a history of abusive and controlling behaviour brutally kills his wife, filming her last moments on a mobile phone with their infant daughter in the house.

A man attacks and kills his wife in a jealous rage, stabbing her to death with their young son forced to witness the ordeal. Mrs. Parson had met another man and came clean to her husband two weeks prior to the murder.

In a brutal attack, Scott Gellatly murdered his estranged wife, Lori Jackson Gellatly, and shot her mother in the Jackson family's home in Oxford, Connecticut. He also injured the dog who was trying to protect the mother and daughter.

A former headteacher kills his estranged wife and her partner in her bed on New Year's Day in Duffield, Derbyshire. Using two kitchen knives, Rhys Hancock inflicted over 100 injuries on the two victims.

A husband loses his life in a brutal murder-for-hire plot carried out by his wife. Mark Arthur and his juvenile accomplice gunned the man down while he was driving along his regular route home.

William Taylor, a 69-year-old Hertfordshire millionaire caught up in a bitter feud with his estranged wife Angela Taylor, paid the ultimate price when she and her partner take his life.

Michele Williams' lavish life lived with her millionaire husband Greg comes crashing down when he winds up dead and she is top of the suspect list. Police need to find out if Michele actually killed her husband.

When a beloved businessman is found dead at his home in Pennsylvania, suspicion immediately turns to his wife who has a reputation for making threats.

The horrifying story of Andrew Tavener, who killed his wife in a jealous frenzy and left their young sons to discover the body.

When two women are found dead at home, the story unfolds that Dallas Augustine shot her partner before turning the gun on herself.

A man carries out the horrendous double killing of his wife and her grandfather before going on the run, leaving his young daughter to discover his crimes.

When Kelley Clayton is brutally killed in her home, her seemingly innocent husband has a solid alibi - until a murder-for-hire plot is revealed.

When a man is shot in his home in New York, it emerges his wife masterminded an evil murder-for-hire plot so she could cash out life insurance money in his name.

The hunt for Martin Duram's murderer goes cold for more than a year until the emergence of an unlikely key witness - his pet parrot - leads detectives to his wife.

The story of how Adrian Goldsmith went from a respected police officer to a convicted killer after the brutal murder of his wife, Jill.

The chilling story of Martin Cavanagh, who killed his estranged wife after becoming consumed with jealousy following the end of their relationship.

The shocking story of Manling Tsang-Williams, a woman who was sentenced to death for the brutal murders of her husband and two young sons.

A former policeman claims his wife's death was accidental after he chokes and smothers her to death at their home in Aberdeen.

Controlling husband Kelvin Newton snaps and strangles his wife to death when she asks him for a divorce in 2013.