Stargate Atlantis

Season 2, Episode 13: Critical Mass

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When an operative of the Trust plants a bomb in Atlantis, the team must find a spy within their own ranks before the Wraith arrive and discover the city.

All Episodes - Season 2

The Siege (3)
Episode 1
The Siege (3)
 The Intruder
Episode 2
The Intruder
 Runner
Episode 3
Runner
 Duet
Episode 4
Duet
 Condemned
Episode 5
Condemned
 Trinity
Episode 6
Trinity
 Instinct
Episode 7
Instinct
 Conversion
Episode 8
Conversion
 Aurora
Episode 9
Aurora
 The Lost Boys (1)
Episode 10
The Lost Boys (1)
 The Hive (2)
Episode 11
The Hive (2)
 Epiphany
Episode 12
Epiphany
 Critical Mass
Episode 13
Critical Mass
 Grace Under Pressure
Episode 14
Grace Under Pressure
 The Tower
Episode 15
The Tower
 The Long Goodbye
Episode 16
The Long Goodbye
 Coup D'etat
Episode 17
Coup D'etat
 Michael
Episode 18
Michael
 Inferno
Episode 19
Inferno
 Allies (1)
Episode 20
Allies (1)
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