"One night, Dr. Julie Rees is stunned when the emergency room she works at is flooded with teenagers suffering from life-threathening drug overdoses. The patients were all at the same party, and Julie soon recognizes that these aren't typical cases. So does Detective Anson Chen, assigned to investigate what happened. Julie, who is also a toxicologist, suspects the teens took--or were given--fentanyl or a fentanyl derivative. But why did they succumb...

"Gentry Coats' fatal overdose stuns a small community in North Carolina, triggering a series of tragic events that threaten the town's traditional values. It triggers a mental breakdown in his best friend, a police officer, whose wife grapples with the burden of her vows in the face of her husband's disturbing behavior. Bitter and lonely, Gentry's mother struggles to place blame surrounding the death of her oldest son, while her younger son retreats...

For San Francisco's newest medical examiner, Dr. Jessie Teska, it was supposed to be a fresh start. A new job in a new city. A way to escape her own dark past. Instead she faces a chilling discovery when an opioid-overdose case contains hints of something more sinister. Jessie's superiors urge her to close the case, but as more bodies land on her autopsy table, she uncovers a constellation of deaths that point to an elaborate plot involving drug dealers...

Small-town secrets don't stay buried for long, and no one know that better than former Chicago medical examiner Gin Sullivan. On extended leave from her job, Gin is back in her hometown of Trumbull, PA, settling into a quiet life with her old high school sweetheart, Jake Crosby. But the demons of Gin's past are lying in wait-and when Jake's estranged mother turns up dead in a local motel from a heroin overdose, life in Trumbull begins to unravel one...