The contamination was discovered by accident.
A routine quality control check on the donor milk supply—one of dozens that Dr. Yun's obsessively careful protocols required—showed anomalous levels of a compound that shouldn't exist in breast milk. Trace amounts of a chemical that wouldn't kill, but would interfere with Leo's already struggling immune system. Subtle enough to look like natural complications. Deliberate enough to be murder.
"How?" Alexander's voice was lethal as he stared at the lab results. "We screen everything. Every person who handles the supply. Every container. Every—"
"The contamination happened at the source." Uncle Li's face was grim as he pulled up the investigation results. "The donor milk bank in Miami. Someone accessed their facility three days ago—the same day Leo was born. Introduced the compound into the sterilization system. Every batch processed since then is compromised."
