On Monday's episode of The Event, doctors work to pinpoint the cause of the mystery illness afflicting the survivors of Avias 514, as the White House attempts to negotiate with the increasingly erratic Thomas. Simon asks Sophia to reconsider her loyalty to Thomas. Sean and Collier make headway in the search for Leila — and Vicky and Carter — in Texas.
The survivors of Avias 514 are hemorrhaging in a dramatic fashion, due to some foreign or perhaps extraterrestrial agent. It's like something out of a zombie movie. Thomas demands that President Martinez release the 96 detainees of Inostranka or else the passengers will die. Mitch takes a turn for the worst, but the medics are able to revive him.