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ER S9E1 — Chaos Theory
8.4
ER•Season 9•Episode 1

Chaos Theory

8.4/10 · 716 votesSep 26, 200245 min

Ranked #1 of 22 in Season 9•+0.7 vs season avg

Discussion

Dr. Carter, Abby and other staff of the ER are quarantined as the CDC investigate a mysterious, deadly outbreak.

Directed byJonathan Kaplan
Written byJack Orman, R. Scott Gemmill
Previous seasonSeason 8Next episodeE2 · Dead Again
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Season 9 Episodes22

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Cast10

Goran Višnjić

Goran Višnjić

Luka Kovač

Maura Tierney

Maura Tierney

Abby Lockhart

Alex Kingston

Alex Kingston

Elizabeth Corday

Laura Innes

Laura Innes

Kerry Weaver

Mekhi Phifer

Mekhi Phifer

Greg Pratt

Sherry Stringfield

Sherry Stringfield

Susan Lewis

Noah Wyle

Noah Wyle

John Carter

Ming-Na Wen

Ming-Na Wen

Jing-Mei Chen

Sharif Atkins

Sharif Atkins

Michael Gallant

Paul McCrane

Paul McCrane

Robert Romano

Crew6

J

Jack Orman

Writer

Jonathan Kaplan

Jonathan Kaplan

Director

R. Scott Gemmill

R. Scott Gemmill

Writer

J

Jacque Toberen

Editor

David Zabel

David Zabel

Co-Producer

Arthur Albert

Arthur Albert

Director of Photography

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Episode Summary

"Chaos Theory" is episode 1 of ER season 9. It scored 8.4/10 from 716 votes, ranking #1 of 22 episodes this season (season average 7.7). Directed by Jonathan Kaplan and written by Jack Orman, R. Scott Gemmill, it aired on September 26, 2002.

Next: E2 · Dead AgainBest of Season 9