Salvation - Episode Guide

When MIT grad student Liam Cole discovers an asteroid is set to collide with Earth in 186 days, he joins forces with tech billionaire Darius Tanz and the U.S. government to try and stop it – and together they stumble onto the greatest conspiracy never told.

Darius and Liam work to invent a theoretically impossible piece of technology to divert the asteroid, and Grace risks everything to help Darius. Also, Liam heads home to Boston to track down critical research, but finds something shocking instead.

It's a race against time as Darius must accelerate his plan to stop the asteroid before the Pentagon shuts him down. Also, Grace has to make difficult decisions that could have life or death consequences for millions of people, and Liam and Jillian reunite under surprising circumstances.

To prove to Harris and Grace that he's not a traitor, Darius must reveal a closely guarded secret; Liam helps Jillian adjust to her new job at Tanz.

Darius tries to discover who killed his friend Lazlo; Liam discovers who's been selling secrets to the Russians.

Darius recruits Grace, Harris and Liam for a dangerous mission, and Jillian confronts Liam about his secret.

Grace and Darius slip off to Russia behind Harris' back in an attempt to stop a potential nuclear conflict. Also, Liam seeks solace with Amanda.

Darius and Grace are framed for murder and must escape from Russia; Liam tries to get Jillian to come back to Tanz.

Grace narrowly escapes a deadly assassin and Darius and Liam forge unlikely alliances.

Grace and Darius seek answers from the President and Harris discovers deadly secrets.

Grace and Harris must forge an alliance when their children's lives are in jeopardy. Also, Liam presents Jillian with an unusual proposal.

Darius, Grace and Harris join forces to prove the president was murdered. Also, Grace tells Zoe the truth.

An illegitimate government now complicates efforts to save mankind from Sampson, the killer asteroid. After the discovery that President Mackenzie is still alive—but had been poisoned—Harris, Grace, and Darius are scrambling to topple the new administration of President Bennett. Meanwhile, Darius is running out of time to finalize his plans for the ark. Will there be a real future for Liam and Jillian? Will Darius, who was disqualified from his own escape plan, find another solution?

The secret of the asteroid becomes public following a nuclear incident, setting the world on a dangerous course. Also, Darius, Grace, Liam and Harris must adapt to new roles in an ever-shifting landscape of fear and civil unrest.

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, and Liam and Darius' relationship is tested.

Grace forges a dangerous alliance with Claire's brother, Alonzo. Also, Harris and Darius must work together to face down Bennett's forces.

Darius and Grace's relationship is tested, and President Mackenzie attempts to bring the fractured country together while the hacktivist group Re/Syst issues a deadly edict.

Darius vows revenge on the hacktivist group Re/Syst, no matter what the cost. Also, Harris discovers a dark secret and Grace reveals one of her own.

Desperate to defuse a nuclear standoff, Liam receives 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, and 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.