Robert Curley is newly married and is renovating an old home for he and his wife, Joann. He is also an electrician doing repair work in a local chemistry lab. Within weeks of starting the new projects he becomes violently ill.

His symptoms get worse and he is admitted to hospital. Local doctors still have no clue what is causing Robert's mysterious illness. He is transferred to a more state-of-the-art facility, but before he can be properly diagnosed he crashes, leaving him brain dead. A few days later, Joann decides to remove Robert from life support.

At the same time, doctors discover he has been poisoned with thallium. Investigators canvas the chemistry lab, but there seems to be no foul-play there. Investigators turn to the family and discover that for the past year his wife, Joann, has been slowly poisoning him, with the iced tea he took to work everyday.