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.