Stargate SG-1 (1997–2007)
6 user 1 critic

The Broca Divide 

The Stargate base is put in deadly peril when it is contaminated with a dangerous infection which causes its victims to become mindlessly animalistic brutes.


William Gereghty


Brad Wright (developed for television by), Jonathan Glassner (developed for television by) | 1 more credit »

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Episode cast overview:
Richard Dean Anderson ... Colonel Jack O'Neill
Michael Shanks ... Dr. Daniel Jackson
Amanda Tapping ... Captain Samantha Carter
Christopher Judge ... Teal'c
Don S. Davis ... Major General George Hammond
Teryl Rothery ... Dr. Janet Fraiser
Gary Jones ... Sgt. Walter Harriman
Steve Makaj ... Colonel Makepeace
Nicole Oliver ... Leedora
Gerard Plunkett ... High Councilor Tuplo
Danny Wattley ... Lieutenant Johnson
Roxana Phillip Roxana Phillip ... Melosha


SG-1 visits a nameless planet which fascinates Daniel as a casus of the "Broca divide", the cohabitation of stone - and bronze age people: the Touched, aggressive cavemen, and a Minoian urban civilization, the Untouched, but with a twist: it's one population, a disease can turn anyone of the Untouched, who is then banished for life, to prevent contagion, even the king's daughter. Dr. Jackson's frustration when Jack decides to return, because no goa'uld threat is found, won't be repeated as the President has added scientific research to the prioritary objectives, but in this case they didn't leave fast enough: very soon members of the team get symptoms of reversal to an animal state, infecting others on the base. General Hammond is forced to have the whole mountain quarantined. As both Teal'c and Daniel and found to be immune, they return to get a blood sample from the Untouched, while Dr. Fraiser searches frantically for an explanation and cure... Written by KGF Vissers

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USA | Canada



Release Date:

15 August 1997 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

16 : 9
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Did You Know?


First hint that Jack and Sam have feelings for each other. Sam insists, "You want me," and he responds, "not like this." See more »


Australopithecus was much more ape than Homo Sapiens and pre-dated humans by millions of years. He had only 1/3 the brain capacity of Cro-magnon or Neanderthal and stood only 3-4 feet tall. See more »


[in a large extravagant room with big bull heads]
Jack O'Neill: Love what they've done with the place.
Captain Samantha Carter: I was gonna do my living room like this, but, it didn't go with my other stuff.
See more »


Featured in Stargate SG-1: Politics (1998) See more »


End Title
Written by Joel Goldsmith
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User Reviews

Dangerous Infection
21 April 2015 | by claudio_carvalhoSee all my reviews

Colonel O'Neill, Sam, Daniel and Teal'c go to a planet where people previous to the Stone Age live in the dark side and Bronze Age people live in the sunny side. Soon they learn that the Touched is an aggressive people while the Untouched are peaceful. Out of the blue, the daughter of the Untouched king is in observation since she have just had contact with the Touched. Further, the Goa'ulds have passed by the planet many years ago. O'Neill decides to return to Earth and soon they discover that they are infected by a strange disease and contaminating the others in the base. However Teal'c, Daniel and Dr. Janet Fraiser are immune and General Hammond orders to seal the mountain and leave the base in quarantine. Teal'c and Daniel return to the planet to get blood sample from the Untouched so that Dr. Frasier may research a cure. But when they arrive, Daniel is abducted by the Touchable and Teal'c does not have support from the Untouchable. Will Dr. Frasier find the cure for the infection?

"The Broca Divide" is an excellent episode of "Stargate SG-1" with a great story of outbreak. The plot is consistent and has funny moments, like when Samantha attacks O'Neill in the locker-room. My vote is nine.

Title (Brazil): "The Broca Divide"

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