Without a Trace

Without a Trace refers to episode 1 of the Season 3 of the television series Forensic Files which was broadcast for the first time on October 1, 1998.

Plot summary
In 1978, 11-month-old Chad Shelton was admitted to an Omaha, Nebraska hospital because of chronic vomiting. The next day Chad went into a coma and died. Duane Johnson was also admitted to the hospital with the same symptoms and died the next day.

Dr. Renea Kimbrough discovered that all of the sick individuals had visited the Johnson home on Sunday, September 10, and all ate a meal together. Everything in the Johnson home was analyzed. Investigators came to the conclusion that DMN was added to the lemonade that the family drank. Steven Roy Harper, a former boyfriend of Sandra Johnson, worked for the Eppley Institute, a local chemical company. Harper admitted to spiking their lemonade with DMN. In 1979, Steven Harper was sentenced to death. Harper committed suicide while on death row in 1990.