With her son’s cancer in remission, NYC medical examiner Laurie Montgomery returns to work—and finds her first case back to be a dangerous puzzle in this compelling mystery by the bestselling “master of the medical thriller.” (The New York Times)
The investigation into the shocking death of CIA agent Kevin Markham is a professional challenge for Dr. Laurie Montgomery, and it has her colleagues wondering if she still has what it takes after so much time away. 
Markham’s autopsy results are inconclusive, and though it appears he’s been poisoned, toxiccology fails to corroborate Laurie’s suspicions. While her coworkers doubt her assassination theory, her determination wins over her husband, fellow medical examiner Jack Stapleton, and together they discover associations to a large pharmaceutical company and several biomedical start-ups dealing with stem-cell research. 
Laurie and Jack must race to connect the dots before they are consumed in a dangerous game of biotech espionage.