An automated lockdown traps Atlantis personnel in various parts of the city, each of them hoping the others will come to their rescue.
"Back from the big island of Hawaii and hard at work roaring towards the end of season four of Stargate Atlantis! It's so hard to believe that we've only got eight more episodes to shoot before we're done for another year. I'm a bit confused (no news there really) as we've got a few days of 'Miller's Crossing' to tidy up while we shoot 'Quarantine' and before we get caught up we'll be well into part one of 'The Kindred.' Spent the first week back locked in a room full of plants with the lovely and talented Brenda James reprising her role as Katie Brown. Not a bad way to get back into the lost city!" (Actor David Hewlett, in a message at his Web site)
"I think 'Quarantine' puts the characters in a position where they absolutely have no choice but to bond." (Actress Jewel Staite, in a Stargate Atlantis media press conference)