Stargate: Atlantis

Poisoning the Well (2004)

James Lafazanos as Col Steven Caldwell

The Siege: Part 3

The Daedalus arrives and the two hive ships are destroyed. Atlantis seems saved, then Zelenka detects 12 more ships. Ford seems changed after a fall in the water.

Mitch Pileggi as Col Steven Caldwell

The Intruder

McKay, Sheppard, Beckett and Weir are on the Daedalus. McKay finds a Wraith virus that is infecting ship systems and sending a signal to the Wraith.

Mitch Pileggi as Col Steven Caldwell

Runner

The team is searching for Ford on a planet. Teyla and Sheppard are taken hostage by a stranger, while Ford tries to convince McKay that he's normal.

Mitch Pileggi as Col Steven Caldwell

Trinity

The team discover an Ancient project to create the ultimate power source. McKay thinks he can finish it. Ronon finds out he is not the only surviving Satedan.

Mitch Pileggi as Col Steven Caldwell

Conversion

Sheppard is infected with the Wraith retrovirus and slowly turns into an Iratus bug. To provide a treatment, stem cells must be retrieved from one of their eggs.

Mitch Pileggi as Col Steven Caldwell

Aurora

McKay finds an Ancient warship adrift in space. Sheppard finds out they are carrying a communique that mentions a weakness in Wraith technology.

Mitch Pileggi as Col Steven Caldwell

The Hive

Sheppard's interrogation is suddenly aborted. Teyla senses another hive ship has arrived. Meanwhile McKay tries to convince his guard to call in help.

Mitch Pileggi as Col Steven Caldwell

Critical Mass

The Trust, a Goa'uld terrorist organization, has planted a bomb in Atlantis.

Mitch Pileggi as Col Steven Caldwell

The Long Goodbye

The team discovers two life pods with a dying woman and man in them. When they are opened, Weir gets imprinted with the mind of the woman. She asks a special favor.

Mitch Pileggi as Col Steven Caldwell

]Inferno

Atlantis helps with repairing an Ancient shield generator on Taranis. They discover the Taranians are in possession of an Ancient warship.

Mitch Pileggi as Col Steven Caldwell

Allies

The hive ship approaching Atlantis is Michael's. He wants a trade: the retrovirus for not revealing the secret of Atlantis and insights on Wraith technology.

Mitch Pileggi as Col Steven Caldwell

No Man's Land

Having fallen into the Wraith trap, McKay resigns himself to captivity in a cocoon, but Ronon keeps trying to escape or at least take some Wraith down with them. Sheppard managed to hide his glider on the same hive ship and is surprised to be contacted over the radio by Michael, who seeks revenge after the ingrate queen considers him to be too human. The Daedalus and Orion race just in time to engage the two hive ships before they may reach Earth. Weir is summoned to the SGC for a pointless grilling by the International Oversight Advisory. She dismisses them as bureaucrats unable to risk a decision beyond questioning what has already been done. Sheppard manages to reach the Daedalus and his party comes up with a daring plan to overpower the hive with the weaponized retrovirus, despite heavy damage compromising even their life-support systems.

Mitch Pileggi as Col Steven Caldwell

Misbegotten

Sheppard and the others are now in control of the one remaining hive ship with most of the Wraith transformed into human form, courtesy of the retrovirus. They do learn something interesting about female Wraiths, however. After they return to Atlantis, the question becomes one of what to do with the Wraiths who are again human, especially Michael who has proved to be quite helpful. Elizabeth Weir meanwhile is surprised to hear that she is to return to Atlantis as the expedition leader. She will be accompanied however by Richard Woolsey who is to review her leadership and make recommendations to the International Oversight Advisory on whether she should be allowed to continue.

Mitch Pileggi as Col Steven Caldwell

Sateda

After a group of people capture Ronon and give him to the Wraith, he becomes a runner again, but this time he's left on his home planet, Sateda, where the Stargate has been disabled.

Mitch Pileggi as Col Steven Caldwell

The Return: Part 1

The Atlantis expedition must turn to an old friend for help as the Asurans prepare to invade the city.

Mitch Pileggi as Col Steven Caldwell

The Return: Part 2

The team returns to Atlantis in an attempt to regain control of the city.

Mitch Pileggi as Col Steven Caldwell

Echoes

Teyla witnesses what appear to be an Ancient apparitions, which soon other people start to see.

Mitch Pileggi as Col Steven Caldwell

Be All My Sins Remember'd

The Atlantis team decides to attack the numerous ships of the Replicators, with the help of uneasy alliances.

Mitch Pileggi as Col Steven Caldwell

The Kindred: Part 1

A plague of sorts is spreading across the Pegasus galaxy and Dr. Keller estimates that hundreds of thousands will die if they don't don't find a way to stop it. Her research shows however that the disease's origin is with the Hoff, who had been working on a way to kill the Wraith. Sheppard and the others think they know who might be spreading the virus and why. Teyla meanwhile believes she is receiving messages from Kanaan, the father of her child. She's getting his messages while sleeping and most think she's just dreaming. She follows the clues he gives her but she is taken prisoner by an old enemy who has very specific plans for her. In their search for Teyla however, Sheppard and McKay find someone completely unexpected.

Mitch Pileggi as Col Steven Caldwell

Search and Rescue

Combat engineers from Atlantis work against the clock to rescue four of their colleagues who are now trapped in the rubble of Michael's medical compound. With Michael en route, they quickly locate McKay and Major Lorne but Sheppard and Ronon are far deeper and their rescue is not assured. When Michael's ship arrives, they decide to try to rescue Teyla who is in labor and close to giving birth. When it's all over, Col. Carter is recalled to Earth for a performance review but Richard Woolsey has some bad news for her.

Mitch Pileggi as Col Steven Caldwell

First Contact

Dr. Daniel Jackson comes to Atlantis in search of a lost Atlantian room. The discovery reveals a new race. Daniel and McKay are kidnapped by the new race and are forced to finish a device which may kill the Wraith. Todd feels betrayed and takes the Daedalus.

Mitch Pileggi as Col Steven Caldwell

Inquisition

Sheppard and his team are lured to a planet and are soon put on trial for crimes against the people of the Pegasus galaxy. In flashbacks, the three judge tribunal recounts the indictment against them including the re-awakening of the Wraith and the various missions where at least a few, if not more, innocent bystanders were killed. Sheppard does his best to argue that on balance, fewer were killed by their presence than would have been the case if they had never been there. A least one of the judges is clearly determined to find them guilty while a second seems far more sympathetic. It's left to Richard Woolsey, who has now joined them, to plead the rest of their case. A lawyer by profession, Richard clearly knows how the game is played and focuses on that third judge.

Mitch Pileggi as Col Steven Caldwell

Enemy at the Gate

A hive ship turbo-charged with a ZPM has received the Wraith's message from a alternate universe containing the location of Earth. The ship is now heading for Earth.

Mitch Pileggi as Col Steven Caldwell