A woman with a seemingly squeaky-clean image is found dead in a fountain; further investigation reveals a surprising motive and multiple suspects.
Sherlock investigates when a wealthy man believes that he was deliberately infected with a degenerative disease; Watson pursues her first solo case.
Elizabeth works on freeing environmental activists held in China for spying while the identity of the cyber stalker maybe be someone from Elizabeth's past.
A state dinner for the US and France is under threat after a CIA operative is captured by French intelligence.
Reese goes undercover on Wall Street when `The Machine' leads them to a financier suspected of illegal trading.