| Image
| Title
| Number
| Airdate
| Planet(s)
| Race(s)
| Enemies
|
| "Adrift" (Part 2 of 3)
| 401
| September 28, 2007
| M12-578
| N/A
| N/A
|
| With less then a day of power left, Atlantis is stranded in the middle of nowhere drifitn through space. Attempting to repair the city, it passes through an asteroid field and in order to make it to a habitable planet they need to repair the city before power runs out.
|
| "Lifeline" (Part 3 of 3)
| 402
| October 5, 2007
| Asuras, M35-117
| Asuran
| Oberoth
|
| Activating the nanites in Weir, Sheppard's team travel to Asuras to steal a ZPM to bring Atlantis back to full power and save the city. Meanwhile the Apollo continues its search for the city.
|
| "Reunion"
| 403
| October 12, 2007
| Earth, M35-117
| Satedan, Wraith, Unnamed
| Ara, Rakai, Tyre, Wraith Commander
|
| Ronon reunites with old friends from Sateda, whom he thought had died long ago. They tell him of their plan to damage a Wraith lab. Meanwhile Col. Samantha Carter arrives on Atlantis to take command and is met with hostility from Ronon when she denies Ronon's friend access to Atlantis.
|
| "Doppelganger"
| 404
| October 19, 2007
| M35-117, M3X-387
| Crystal of M3X-387
| Crystal of M3X-387
|
| Coming across a crystal on a planet (similar to that encountered by Jack O'Neill), Sheppard inadvertently brings back a malevolent energy form. The energy moves to others and causes violent nightmares of Sheppard causing the death of others.
|
| "Travelers"
| 405
| October 26, 2007
| M35-117
| Traveler, Wraith
| Wraith Commander
|
| Coming home from a re-supply mission, Sheppard's Jumper is attacked and captured by a previously un-encountered race known as Travelers. They force him to help them activate a dormant Aurora-class battleship, he manages to take control of the ship and create a distress beacon, however it captures the attention of the Wraith.
|
| "Tabula Rasa"
| 406
| November 2, 2007
| M35-117
| N/A
| N/A
|
| An illness begins affecting the Atlantis expedition and the afflicted begin to lose their memories and eventually kill them. Ronon and Teyla are unaffected and the fate of the city and its inhabitants rest with them, they must convince the others as to who they are.
|
| "Missing"
| 407
| November 9, 2007
| M35-117, New Athos
| Bola Kai
| Omal, Nabel Golan
|
| Teyla and Dr. Jennifer Keller travel to New Athos for a routine medical check-up. However when they arrive, they find the settlement abandoned and a dangerous tribe in the area may be the cause. They find a survivor who claims to be a Genii spy who tells them the Wraith took the Athosians.
|
| "The Seer"
| 408
| November 16, 2007
| M2R-441, M35-117, Vedeena
| Wraith, Vedeenan
| N/A
|
| Atlantis makes contact with Davos, a man who can see glimpses of the future. Teyla hopes he can help her find out what happened to the Athosians. Meanwhile Richard Woolsey comes to Atlantis for a three month evaluation of Col. Carter and Todd pays a visit informing them of a new tactic being taken by the Asurans.
|
| "Miller's Crossing"
| 409
| November 30, 2007
| Earth, M35-117
| Wraith
| Henry Wallace
|
| McKay's sister, Jeannie Miller is kidnapped after receiving a message from McKay. She is taken by Henry Wallace a man who's daughter is dying and the only hope is to use nanites which have to be coded properly and needs both Jeannies and McKay's help.
|
| "This Mortal Coil" (Part 1 of 3)
| 410
| December 7, 2007
| Asuras, M34-227, M35-117, Niam's faction's planet
| Asuran
| Oberoth
|
| A probe crashes into Atlantis and Sheppard and his team believe that the Asurans have found them. However soon, they notice a series of strange occurrences which lead the team to believe that something else is going on. There suspicions are confirmed when they find Elizabeth Weir in the city.
|
| "Be All My Sins Remember'd" (Part 2 of 3)
| 411
| January 4, 2008
| Asuras, M35-117
| Asuran, Traveler, Wraith
| Asurans
|
| The Asurans are attacking human worlds to wipe out the Wraiths food supply and with the Atlantis expedition now having a way to track all the Asuran ships. The Apollo and the Daedalus arrive and begin destroying the Asuran ships, however they eventually retreat to their homeworld and the team must come up with a way to take them all out at once and will need the help of the Wraith and the Travelers to do so.
|
| "Spoils of War" (Part 3 of 3)
| 412
| January 11, 2008
| Asuras, M35-117, Unnamed
| Wraith
| Wraith Queen
|
| Finding a damaged Wraith hive ship they find a mention to a secret Wraith facility. Traveling there they find a massive facility where the Wraith clone their warriors. The team finds Todd in stasis and he informs them that he "acquired" some ZPM's from the Asurans to power the facility.
|
| "Quarantine"
| 413
| January 18, 2008
| M35-117
| N/A
| N/A
|
| Atlantis goes into quarantine lockdown trapping everyone across the city. Attempting to disable the automatic distress beacon Sheppard scales the outside of the tower, however his actions and a malfunction leads the city to activate the self destruct.
|
| "Harmony"
| 414
| January 25, 2008
| Harmony's planet
| Harmony's people, Genii
| Toran
|
| McKay and Sheppard are on a planet where th royal family ask them to escort a young princess, Harmony through a forest to an ancient ruin to become queen. However the forest is guarded by a strange beast and they are hunted by members of the Genii.
|
| "Outcast"
| 415
| February 1, 2008
| Earth, M35-117
| Human form Replicator
| Poole's Replicator
|
| Finding out his father died, Sheppard returns to Earth with Ronon, where they meet a woman who claims she worked for a man who built a Replicator with nanotechnology and now the Replicator is loose on Earth and they must find it before it causes any damage.
|
| "Trio"
| 416
| February 8, 2008
| M35-117, M5V-801
| People of M5V-801
| N/A
|
| Carter travels offworld with McKay and Keller to help convince the inhabitants to move to a safer area when there village is plauged by earthquakes. McKay falls into an old Genii mining facility and Keller and Carter attempt to rescue him and also fall in. They must find a way out before the facility collapses.
|
| "Midway"
| 417
| February 15, 2008
| Earth, M35-117, M4F-788
| Jaffa, Wraith
| Wraith Commander
|
| Teal'c arrives in Atlantis to help teach Ronon to deal with any questions the IOA will give him in his evaluation. Teal'c is met with hostility from Ronon however they must find a way to work together when the Wraith infiltrate the Midway space station.
|
| "The Kindred" (Part 1 of 2)
| 418
| February 22, 2008
| Hoff, M2S-181, M35-117
| Athosian, Hybrid, Wraith
| Michael Kenmore
|
| A mysterious plague begins affecting several unconnected worlds and the team must find a way to help these people. Teyla begins to receive visions of her people and goes in search of them.
|
| "The Kindred Part II" (Part 2 of 2)
| 419
| February 29, 2008
| M35-117, Unnamed
| Athosian, Hybrid
| Michael Kenmore
|
| Carson Beckett who died years ago is found alive and is revealed to be a clone. With Becketts help they attempt a rescue of Teyla.
|
| "The Last Man" (Part 1 of 2)
| 420
| March 7, 2008
| Earth, M2S-445, M35-117, M4S-587
| Hybrid
| Michael Kenmore
|
| Returning to Atlantis, Sheppard finds himself 48,000 years in the future, alone. He finds a hologram of McKay who tells him what happened in the future and how he can get back to his own time and stop it from happening.
|