Season 1  

Kimberly Clark Saenz preyed on patients while they were at their most vulnerable — during their dialysis treatment.  

Dialysis patients' weekly treatments go from routine to fatal without explanation. Police shut down the Lufkin, TX, facility to investigate what, or who, may have turned lethal.

S1/EP4  

Those involved in the investigation of Kimberly Clark Saenz remember the former nurse's misteps before she was charged with multiple murders. According to Lufkin, Texas District Attorney Clyde Herrington, Saenz had previously been employed at Woodland Heights Hospital and was fired becase of being a suspect in the theft of Demerol. In 2012, Saenz was found guilty of the 2008 murders of five dialysis patients and injuring five other patients.

Season 1  

Patricia Powell remembers being interviewed by detectives about the death of her husband, John Powell. John had been hospitalized after a motorcycle accident, and investigators later found traces of cyanide in his system during the autopsy. Police ultimately learned John was a victim of nurse's aide Donald Harvey.

Season 1  

Prosecuting attorney Joe Deters reflects on the chilling crimes of former nurse's aide Donald Harvey. Accrording to Deters, Harvey poisoned his boyfriend and his boyfriend's co-workers, and he also killed lovers he had outside of his relationship. Harvey used arsenic to make his boyfriend Carl Hoeweler sick, and during a dinner party with friends, Harvey even "had an HIV virus that he dumped on a salad."

So many patients died under the care a Clinton, Indiana, nurse that co-workers began to joke that he was the “Angel of Death.”

S1/EP4  

Those involved in the trial of nurse Kimberly Clark Saenz reflect on the case. In 2012, Saenz was found guilty of the 2008 murders of five dialysis patients and injuring five other patients. Saenz had injected bleach into the patients' tubes at a Lufkin, Texas, dialysis clinic.

S1/EP4  

Lufkin, Texas District Attorney Clyde Herrington discusses the police interview of Kimberly Clark Saenz. According to Herrington, as the interview progessed, Saenz appeared to become intoxicated, leading officers to believe she had "taken something" before meeting with police. In 2012, Saenz was found guilty of the 2008 murders of five dialysis patients and injuring five other patients.

Season 1  

Family of one of Kimberly Saenz's ill-fated patients remembers them experiencing paralysis after a dialysis session, due to being given too much of the anti-coagulant heparin. Saenz would be found to have done much worse, however.

Dr. Terry Dubrow discusses the minds behind murderers in the medical field.

Season 1  

A nurse recalls seeing something that looked like a hairball in Garlin Kelley's dialysis tube after killer nurse Kimberly Saenz prepped him. He then went into cardiac arrest, and later died.

S1/EP3  

Dr. Eric Prystowsky recalls how while he testified during killer nurse Orville Lynn Majors' murder trial, the so-called "Angel of Death" stared at him. "I wanted to win," Prystowsky says. "I wanted this guy to be put away."