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.

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.

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.

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.

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.

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

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.

One Saturday in July 2006, prominent Nevada state politician Kathy Augustine, was supposed to attend a political fundraiser, but she never showed up.

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.

Audrey Marie Hilley's husband, Frank Hilley, supposedly died of infectious hepatitis in 1975. He had been ill for some time, but because his symptoms aligned with hepatitis, no tests for poison were carried out.

When Orange County detective, Yvonne Shull, opened up Linda Curry's cold case file, it began a seven year journey into the toxic machinations of a consummate liar.

Larry McNabney was murdered in September, 2001, but his death was so well concealed that no one reported him missing for almost three months.

Joe Cinque and Anu Singh were both young and set for a bright future. However, it all took a turn for the worse when Anu Singh began to declare to a select few friends that she was going to kill her boyfriend.