Poisonous Liaisons

Ellie Tran's ex-boyfriend, Joseph Merlino III was an aggressive and ruthless poisoner. He chose to take the life of the mother of his daughter by attacking her in the driveway of her home with a syringe filled with cyanide - on Valentine's Day.

One Saturday in July 2006, prominent Nevada state politician Kathy Augustine, was supposed to attend a political fundraiser, but she never showed up. She lay dying in her bedroom. Her husband, Chaz Higgs, may have thought he'd planned a perfect murder, but the former US Navy medic, turned nurse, came to learn that loose lips do indeed sink ships.

Richard Overton led a double life, marrying whilst already married. It's a scam he led for a year and a half, but his downfall led to divorce from his first wife and an annulment from his second.

In 1958, the town of Macon, Georgia changed forever when voluptuous, voodoo-loving restauranteur, Anjette Lyles, stood trial for murder. Her restaurant was incredibly popular and Anjette was the perfect host, but underneath that welcoming, warm hearted exterior was a harsh, cold blooded murderer.

From a young age Graham Young was interested in chemistry, forensic science and toxicology. He managed to acquire poisons from local chemists and put them to the test to see how it affected the people around him - starting with his family.

What should have been the relaxing end to a balmy day along the Egyptian Nile... became a hellish nightmare for one innocent business woman, when pathological liar, John Allan, was intent on her murder.

In the spring of 1954, one man's lust would lead to deception and death, with the help of an obscure but deadly insect, the Spanish fly.

For over three decades, Alamance County in North Carolina was plagued by a toxic preacher's daughter with a troubled past. One by one, the men in Blanche Moore's orbit suffered slow, agonizing deaths.

Within hours of being rushed to a West London hospital one cold January night in 2009, Lakhvinda Cheema would be dead and his young fiancé clinging to life in intensive care. The couple showed every vicious symptom of being poisoned.