When his son is murdered in New Orleans, Dan launches a relentless and lonely search for the killer. As hope fades, he uncovers a miraculous lead.

The murder trial brings cold comfort. Trying to resume a normal life, Dan returns to work at the pharmacy and makes an alarming discovery.

Dan's smoking gun is a breakthrough for a major DEA case, but solving one problem creates another. A chapter closed, Danny's family moves forward.

Dan's investigation into a corrupt doctor reveals some of big pharma's worst sins. Meanwhile, overdoses in town see a terrifying spike.