Treating up to ninety patients a day, Dr. Stan Li, a pain management physician in New York City, racked up over $450,000 in just over three years by writing controlled substance prescriptions. Seduced by money and fueled by callous disregard, Dr. Li fed a deadly network of addiction, responsible for the fatal overdoses of two people and endangering countless more. Just as prosecutors uncovered the first fatalities, one of Dr. Li's addicted patients murdered four innocent people in a Long Island pharmacy. Now, Charlotte Bismuth, the prosecutor who helped try Dr. Li, recounts the exhaustive detective work and trial that resulted in the landmark manslaughter conviction for this killer. Meticulously constructed from trial transcripts and court documents, amplified by personal recollections, Bismuth reveals a story of greed, grit, loss, and hope, turning the spotlight on the national tragedy, and on those who step up to the fight while others turn a blind eye for the sake of greed.