A former neurosurgeon forced into a change of career, Dr Megan Hunt has overcome the effects of a devastating accident to become Philadelphia's most notorious medical examiner. When it comes to understanding the dead, she is remarkable; her family having taken a back seat to her ambition, her relationships with the living are an altogether different story.
Megan tracks a killer who is targeting a military unit.
After a terrorist infects himself with a deadly virus, the team must find the culprit before he spreads the contagion throughout Philadelphia.
A body with a missing brain reminds Megan of her first case. Is this the work of the same serial killer?