Description:Data Analyst Cass Dumont finds something she never expected. She's data mining at Angel of Mercy Hospital and turns up information suggesting there are too many heart attacks. She's sure she's wrong, but the data doesn't lie. Too many heart attacks, and no good explanation. Being a woman who loves puzzles, she can't let it go. She has to know why.
Except there's no evidence. And her image-conscious boss is angry at her for digging into it. And her boyfriend urges her to stop.
But she can't get it out of her mind. What if equipment is malfunctioning? What if there's a bad batch of medicine?
What if there's an angel of death walking the halls?