Season 1 Episode 20 episode 20

The Event Episode 20 "One Will Live, One Will Die" Guide

Check out the official episode guide for The Event episode 20, "One Will Live, One Will Die". Episode airs on May 9.

DOUBLE AGENT WITH A COUNTER AGENT -- ROGER BART GUEST STARS

  • With doubt still surrounding the tragedy at the White House, Sterling encounters an unlikely ally in Simon, who risks his life to return with a possible antidote.
  • Against the wishes of Chief of Staff Richard Peel (guest star Roger Bart, "Desperate Housewives"), Jarvis authorizes an air strike to neutralize them.
  • Sophia continues on her diabolical plan to exterminate the human race, now with the help of an unwitting accomplice -- Leila.
  • Sean and Vicky try to prevent the deaths of many thousands of innocent people.
  • Blair Underwood and Lisa Vidal also star.