Stargate Atlantis · S4, E13
Quarantine
A nervous Dr McKay arrives in the botany lab with the intention of asking Katie to marry him, when an alarm sounds throughout the city. It immediately activates a quarantine shutdown, trapping them in the lab with no way out, but help is not imminent. Lt Colonel Sheppard and Teyla are locked in McKay's lab, Colonel Carter and Dr Zelenka are confined in the transporter and Dr Keller and Ronon are unavailable.
