Omo Ovella Glenn Wyler was 95 when she died at Nocona General Hospital in Nocona, Texas, on January 24, 2001. Admitted for congestive heart failure, she had been treated and was to be discharged when she was given an injection of mivacurium chloride, a powerful muscle relaxant, and stopped breathing.

Her death was later linked to a string of suspicious patient fatalities at the hospital between December 2000 and February 2001. Hospital staff noticed a pattern and missing vials of Mivacron, prompting investigations by local authorities, the Texas Rangers, and the FBI. Those inquiries led to the arrest and later conviction of licensed vocational nurse Vickie Dawn Jackson, who was accused of murdering multiple patients by injecting them with the drug. Lawsuits over earlier deaths at the facility had already alleged unprescribed injections and negligent care.

Wyler’s death was one of the cases that helped expose the pattern of fatal injections at the hospital.