Nikita knows better than most that looks can be deceiving, yet an angel-faced little girl trained to kill by a rogue Division agent successfully dupes the spy. (Season 3, episode 2 of 22)
One last mystery holds the key to saving the world; Grace must choose how she spends her final days.
Grace is asked to lie under oath; Darius tasks Liam with a dangerous mission; a shocking act of violence plunges the nation into chaos.
Darius and Grace must forge an emotional détente to get international cooperation; Liam meets a new scientist who has a mysterious past.
After a nuclear incident, the secret of the asteroid becomes public, setting the world on a dangerous course; Darius, Grace, Liam and Harris must adapt to new roles in an ever-shifting landscape of fear and civil unrest.