Due to the graphic nature of this killer's crimes,

listener discretion is advised.

This episode includes discussions of poisoning and murder

that some people may find offensive.

We advise extreme caution for children under 13.

69 year old Rina Cooper,

lay in a hospital bed at the Ohio State University Medical Complex.

Machines word and beeped around her, keeping rhythm with her pulse,

announcing that she was in a stable condition after her back surgery that morning.

Her doctors and the hospital nurses all remarked that Rina was recovering well.

So she relaxed when the doctors finished their evening rounds. Now she could just

rest peacefully for the night.

Rina was surprised when 29-year-old Dr Michael Swango popped his head into the

room. In reality, Michael wasn't a doctor quite yet.

He was still an intern, but he carried himself with the confidence of a doctor.

And that was more than enough to make him seem qualified.

As Michael took a syringe out of his pocket and approached her IV, Rina trusted that he was

administering her routine pain medicine.

Michael carefully watched Rina and the machines

tethered to her as he administered a dosage.

When he was done, the young intern pocketed the needle and hurried from the room.

Rina expected to feel some pain relief as the medication took effect, but instead,

...