The Event - Season 1 Episode 5 - The CDC works to identify the biological agent and treat the infected persons while the White House and Sterling negotiate with Thomas. In other events, Simon wants Sophia to turn on Thomas and Collier comes closer to catching Vicky and Carter.
The Event - Season 1 Episode 6 - President Martinez and the Director of National Intelligence, Blake Sterling fulfill their agreement with Thomas, but after their plan goes awry, they suspect that there is a possible mole in their midst. Elsewhere, Sean Walker digs for answers at Leila's home, where he encounters Madeline, a mysterious conspiracy theorist. Meanwhile, Simon's past is illuminated, and his allegiances are tested.
The Event - Season 1 Episode 7 - Sterling becomes suspicious of the people close to him; Sophia prepares Thomas and the rest of the detainees for the next part of their mission; Madeline helps Sean look for answers.
The Event - Season 1 Episode 8 - President Martinez, furious about recent security failures, demands answers from Director of National Intelligence, Blake Sterling. When he doesn't receive the progress that he desires, Martinez decides to personally interrogate Michael Buchanan about his involvement in the assassination attempt. While Michael holds to his claim that he doesn't know who is involved, he inadvertently reveals incriminating evidence about someone deep inside the President's staff. Meanwhile, Dempsey dispatches Vicky on a new clandestine mission. And, elsewhere, Sean and Leila scramble to stay ahead of the covert ops that are trying to silence them and what they know.
The Event - Season 1 Episode 9 - Sophia sets a trap after discovering dissension among her people; Leila and Sean investigate Samantha's kidnapping and try to evade Dempsey.
The Event - Season 1 Episode 10 - President Martinez confronts the traitor in his administration, only to be met with threats of exposing the cover-up of Avias Air 514. Even after testing the loyalty of Isabel and Thomas, Sophia still suspects their subterfuge, so she sends Simon on a fact-finding mission. Her suspicions are confirmed when Thomas unveils a shocking new plan. Meanwhile, on the hunt for Samantha, Sean and Leila battle the mercenaries sent by Dempsey.
The Event - Season 1 Episode 12 - President Martinez and his longtime Chief of Staff charge the intelligence community with decrypting Thomas" satellite message, but more importantly determining to whom it was sent. While they are distracted, Thomas unveils a surprise attack, but he does not anticipate a heroic stand-off with Blake Sterling, who learns an important lesson about Sleepers from Maya. Meanwhile, newly appointed Alaskan Senator Catherine Lewis threatens to divulge information about the Mt. Inostranka detention facility on an episode of Hardball with Chris Matthews. Elsewhere, Sean and Leila get a fresh lead on the whereabouts of Samantha, but it leads them to a dramatic turn in their lives. James Dempsey foresees that he and Sean will once again cross paths.