
This episode covers the cyanide poisoning case involving Julie Williams, the attempted murder of Diane Harry, and the investigation into Lewis Harry and Roy Fitzpatrick.
On a Monday morning at Transamerica Title Insurance Company in Tempe, Arizona, Julie Williams ingested cyanide from the water cooler, leading to her coma and eventual death. Investigators discovered high levels of cyanide in the office's coffee pot and water supply, prompting a closer look at the employees.
Police questioned Diane Harry, who revealed she may have been the intended target. Her husband, Lewis Harry, was implicated after evidence showed he had purchased cyanide and sent threatening letters to himself, using a distinctive envelope flaw.
Further investigation revealed Lewis had a motive related to his affair with Sharon Jones and a potential financial gain from Diane's life insurance policy. He attempted to kill Diane multiple times before Julie became the victim.
Ultimately, Lewis was convicted of first-degree murder and attempted murder, sentenced to life in prison. The case highlighted the importance of forensic evidence, including handwriting analysis and envelope defects, in securing a conviction.
Julie Williams died from cyanide poisoning at work, leading to the arrest of her husband Lewis Harry for murder and attempted murder.

This episode stands out for the following:
This proved that lewis harry sent himself at least one of the threatening letters.Forensic Files Season 11, Episode 24 - Water Hazard - Full Episode
She was an innocent victim of a marriage gone horribly wrong.Forensic Files Season 11, Episode 24 - Water Hazard - Full Episode
I still can't forgive him.Forensic Files Season 11, Episode 24 - Water Hazard - Full Episode