Stargate SG-1 (1997–2007)
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After Sam receives an emergency call from geneticist Dr. Richard Fleming, SGC learns that he has been working for Immunotech a company owned by Adrian Conrad, who implanted himself with a ... See full summary »



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Episode cast overview:
... Colonel Jack O'Neill (credit only)
... Major Samantha Carter
... Teal'c
... Jonas Quinn
... Major General George Hammond
... Sheriff Knox
... Deputy / Agent Cross
... Dark-haired Man
Peter Anderson ... Dr. Richard Flemming
... Special Operations Sergeant
... Townsperson
... Snake Townsperson
... Barkeep / Agent Singer
Dave 'Squatch' Ward ... Antagonistic Bar Guy
Christie Wilkes ... Delivery Woman


After Sam receives an emergency call from geneticist Dr. Richard Fleming, SGC learns that he has been working for Immunotech a company owned by Adrian Conrad, who implanted himself with a Goa'uld symbiote in order to cure himself. Fleming has now gone missing and General Hammond orders Sam, Jonas and Teal'c to investigate. They head to Oregon when Fleming lived and worked and learn from the local Sheriff that Fleming isn't the first Immunotech worker to disappear. The locals are acting strangely and seem to suffer from memory lapses. What they eventually find is a town full of Goa'uld and NID seemingly aware of everything that is going on. Written by garykmcd

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Release Date:

12 July 2002 (USA)  »

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Technical Specs


Sound Mix:

| (Dolby 5.1)


Aspect Ratio:

16 : 9
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Did You Know?


The name on Agent Cross's jacket is P. Mullie. Paul Mullie wrote 49 episodes of Stargate, including this one. He was also executive producer/supervising producer/co-executive producer/producer/co-producer (148 episodes, 2000-2007) See more »


When looking at the missing professor's computer, Carter brings up the My Computer window, which shows 0 used space on the C drive. At least some space should be used by the OS. See more »


Sam Carter: You knew who Adrian Conrad was didn't you.
Jonas: Well I've memorized all of your mission reports. I just don't want people around here thinking I'm... strange.
Sam Carter: People don't think your strange.
Jonas: What about Colonel O'Neill?
Sam Carter: [pause] Let's get some lunch.
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Main Title
Written by Joel Goldsmith and David Arnold
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User Reviews

Invasion of the Body Snatchers
24 April 2017 | by See all my reviews

Sam receives a mysterious phone call from the scientist Dr. Richard Fleming in the middle of the night telling that Adrian Conrad's project is still operative; then she hears a car crash and the call ends. On the next morning, the SGC learns that he works for Immunotech and Sam, Teal'c and Quinn are assigned by General Hammond to travel to Steveston to investigate the case. The local sheriff tells that Dr. Fleming is missing and his laboratory was burned to the ground. They go to his house, but is totally clean. Out of the blue, the postman arrives and delivers a package from Dr. Fleming to Dr. Fleming. Sam opens the box and finds a syringe with a liquid. Soon they note that the residents have a strange behavior. What is the mystery of Steveston?

"Stargate SG-1 – Nightwalkers" uses the storyline of the classic "Invasion of the Body Snatchers" using symbiote. The result is a good episode without the participation of O'Neill. Sam is great as the SG-1 leader. My vote is eight.

Title (Brazil): "Nightwalkers"

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