When people in New York City start turning the color blue, the NIH team is called upon to help cure this outbreak. When searching for the cause, a diner holds an important clue - but what is the ingredient that they all had in common? Only 3 weeks on the job, McCabe is sent to investigate a baby whose parents are thought to have been abusing her. A well-known disease is the answer to the question - brittle bone disease.
A business woman complains to a night janitor in New York that she can't move her legs. She's the third victim of symptoms from unknown origins. At the same time at Raymond Air Force Base, Virginia, some soldiers' wives miscarry 72 hours after the first indications that something's dangerous is imminent.