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 ...

Darius and Grace must forge an emotional détente in order to get international cooperation. Also, Liam meets a new scientist with a mysterious past. ...

Loyalties are tested when Grace is asked to lie under oath. Also, Darius tasks Liam with a dangerous mission, and a shocking act of violence plunges the nation into chaos ...

Grace embarks on a dangerous mission; meanwhile, Liam and Darius' relationship is tested. ...

Grace forges a risky alliance with Alonzo. Harris and Darius must work together to confront Bennett's militia. ...

Darius and Grace's relationship is tested when her secret is revealed. President Mackenzie tries to unify the fractured country. Re/Syst issues a deadly threat. ...

Darius wants revenge against ReSyst despite the cost. Harris discovers a dark secret as Grace reveals her own secret. ...

Desperate to defuse a nuclear standoff, Liam gets help from an unlikely source. Also, with Darius missing, Harris and Grace take matters into their own hands. ...

Darius, Grace and Harris uncover the darkest secret yet; Liam reconnects with Jillian. ...

Darius forms a dangerous alliance in order to destroy the dark money forces of Q17. Also, Grace takes action when surprising news jolts her world. ...

A stand-off at the COPE compound leads to tragic results. ...

The government's final plans for a doomsday scenario set in motion a surprising chain of events for Grace, Darius and Harris. ...

One last mystery holds the key to saving the world, and Grace must choose how she spends her final days. ...