Recap: Stargate Atlantis S02 E13 "Critical Mass"
Here we are, gloating about the in-fighting among the Wraith. How are we any different?
—- Dr. Weir finally starts to come to grips with her own hypocrisy.
The Atlantis long range scanners pick up a pair of Wraith cruisers headed vaguely in their general direction. Not to worry, they're fighting with each other and not particularly aimed at Atlantis, so one wonders why we even mentioned it. But what's this? We've cut back to the SGC, and it's general Landry, and Major Barrett, and Dr. Lee - heck, even Walter! Basically, every SG-1 cast member they can dredge up except the members of SG-1. It turns out that the Trust
has a (probably human) Mole
on Atlantis, and the Goa'uld (remember them?) have rigged the city to explode the next time they dial Earth! Which is later today!
Dr. Lee figures out a way to use the Daedalus and some Stargates to relay a message back to Atlantis, and they shut down the gate and unplug the ZPM just in time. Well, that was easy. And now begin the search for the mole in their midst. Immediate suspicion falls on the hateful Dr. Kavanaugh
, currently on board the Daedalus, because he's just so hateful! McKay suspects Lt. Cadman, because he has issues with her
in general, but nobody pays him any attention. Weir calls Caldwell back to Atlantis and starts interrogating folks. Caldwell calls back to Earth for permission to do so - and then heads back to Atlantis anyway before waiting for a reply.
Unrelated to anything else going on, Teyla's mentor person is in the process of dying of nothing in particular. Dr. Beckett seems to think his hypocratic oath requires him to give her a pacemaker against her express wishes, but comes to his senses eventually. She dies, and the Athosians hold a complicated funeral thing which involves Teyla singing throughout the rest of the drama in the episode.
Such drama comes in the form of the gate up and dialing Earth of its own accord - which fortunately does nothing, since the ZPM is unplugged. While everybody is freaking out over nothing, the distress beacon activates, and the two Wraith cruisers (remember them?) put aside their differences and head over to check it out. Time to cloak up - which requires plugging the ZPM back in - which leaves the city vulnerable to a critical overload if the systems really try - which of course they do. Fortunately, there's a password which will shut everything down. They just need to beat it out of the mole before the ZPM explodes in half an hour from now.
Clearly the best solution is to start torturing Kavanaugh for information, who has somehow incriminated himself by not having any friends. In case it doesn't work, Caldwell prepares to evacuate everyone to the Kill Sat planet
in the Daedalus. As they are lifting off, Cadman rushes in - she has discovered based on some records anomalies that the mole is in fact Col. Caldwell
- who is a Goa'uld! Good thing they haven't actually started torturing Kavanaugh yet. Sheppard tazes the Goa'uld until Caldwell
's personality resurfaces and reveals the deactivation code. The city is saved (just in time!) and Hermiod gets to work on modifying Asgard beam technology to safely remove the symbiote.