NBC has released official spoilers for The Event episode 5, titled "Casualties of War".
- The biological threat intensifies.
- The CDC rushes to identify the contagion and treat the infected people, while the White House and Director of National Intelligence (Željko Ivanek) face a difficult dilemma in their negotiation with Thomas (Clifton Collins, Jr.).
- Simon appeals to Sophia to turn on Thomas.
- FBI Agent Collier closes in on Vicky and Carter ( guest star ), but appearances are not always what they seem.