Alien: Earth backdrop

Alien: Earth S1E4 — Observation

7.2

Alien: Earth•Season 1•Episode 4

Observation

7.2/10 · 9,696 votesAug 26, 202560 min

Ranked #5 of 8 in Season 1•−0.1 vs season avg

An unexpected connection is formed while a covert plot puts everyone in danger.

Directed byUgla Hauksdóttir

Written byNoah Hawley, Bobak Esfarjani

Previous episodeE3 · Metamorphosis Next episodeE5 · In Space, No One...

Seasons1

Season 1 Episodes8

Neverland still

Neverland

Mr. October still

Mr. October

Metamorphosis still

Metamorphosis

Observation still

E4 7.2Now viewing

Observation

In Space, No One... still

In Space, No One...

The Fly still

The Fly

Emergence still

Emergence

The Real Monsters still

The Real Monsters

Cast14

Sydney Chandler

Sydney Chandler

Wendy

Alex Lawther

Alex Lawther

Joe DiMaggio Hermit

Essie Davis

Essie Davis

Dame Sylvia

Samuel Blenkin

Samuel Blenkin

Boy Kavalier

Babou Ceesay

Babou Ceesay

Kumi Morrow

Adarsh Gourav

Adarsh Gourav

Slightly

Erana James

Erana James

Curly

Lily Newmark

Lily Newmark

Nibs

Jonathan Ajayi

Jonathan Ajayi

Smee

David Rysdahl

David Rysdahl

Arthur Sylvia

Diêm Camille

Diêm Camille

Siberian

Moe Bar-El

Moe Bar-El

Benjamin Rashidi

Crew10

Noah Hawley

Noah Hawley

Writer

Bobak Esfarjani

Bobak Esfarjani

Writer

Ugla Hauksdóttir

Ugla Hauksdóttir

Director

David Franco

David Franco

Director of Photography

G

Gregory J. Pawlik Jr.

First Assistant Director

Ashley Bell

Ashley Bell

Second Assistant Director

J

Jason Knox-Johnston

Production Design

C

Curtis Thurber

Editor

Andy Nicholson

Andy Nicholson

Production Design

S

Shira Hockman

Supervising Art Director

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Episode Summary

"Observation" is episode 4 of Alien: Earth season 1. It scored 7.2/10 from 9,696 votes, ranking #5 of 8 episodes this season (season average 7.3). Directed by Ugla Hauksdóttir and written by Noah Hawley, Bobak Esfarjani, it aired on August 26, 2025.

Next: E5 · In Space, No One...Best of Season 1