[s4e13] Quarantine -

: The stress of the situation ultimately strains McKay's relationship with Katie Brown, setting the stage for their eventual breakup.

: Locked in McKay’s personal lab. They discover the city has malfunctioned and is broadcasting a distress beacon that could reveal Atlantis's location to the Wraith. [S4E13] Quarantine

: To stop the distress beacon, Sheppard performs a dangerous external climb up the side of the city's central spire to reach the control room. : The stress of the situation ultimately strains

: The team must regain control of the computer systems to override the countdown before the city is destroyed. Key Character Developments [S4E13] Quarantine

: Confined in a transporter (lift) with only a laptop. Their attempts to bypass the system lead to friction, especially when Zelenka accidentally shorts out a circuit.