Stargate Atlantis - Season 4 Vol. 5

Season 4: Episodes 17-20

Midway:

Teal’c’s attempts to calm Ronon during a critical IOA interview fail. But far more threatening than Ronon’s temper is a Wraith plan to attack the Midway station.

The Kindred:

As Teyla and Sheppard search for signs that Kanaan is still alive, a mysterious illness is traced to a human-engineered protein found in the Wraith’s food supply.

The Kindred, Part II:

A friend once believed dead returns to Atlantis. Meanwhile, Teyla, now captive herself, plots an escape for fellow Athosians who are interned at a secret facility.

The Last Man:

Unable to locate Teyla, Sheppard heads back to Atlantis, only to discover that the city is suddenly missing something – its inhabitants!