Ambush (ER)
episode of ER (S4 E1)
"Ambush" is the premiere episode of the fourth season of the American medical drama ER. The 70th episode overall, it was written by executive producer Carol Flint and directed by Thomas Schlamme and it was first broadcast on NBC on September 25, 1997, as a live episode, filmed twice for the East and West Coast. The episode was also pre-filmed in the event a technical issue happened.
Shown through the perspective of a PBS documentary film crew, the emergency room is filmed as a day in the life of the doctors. The episode introduced British actress Alex Kingston as Elizabeth Corday to the cast. Inspiration for the episode came from production staffers having worked in documentaries, with Anthony Edwards and George Clooney suggesting to do it live.
In its initial airing, "Ambush" received the highest rating of the week. Seen by a total of 42.71 million viewers, it became the most-watched season premiere episode for a drama series. Reception to the episode was mixed from critics. Praise was given to the live performances but the story and script writing were criticized for being lackluster. "Ambush" received four nominations at the 50th Primetime Emmy Awards, winning one.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 2, 2026. The linked authority identifier is Q15616355. 2 of 2 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 1997.
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This entry incorporates text from “Ambush (ER)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.