The Pegasus Invasion, Part 1

"The Pegasus Invasion, Part 2" is the 20th and final episode of the fifth season.

Synopsis: The invasion of the new enemy-species, The Tylaque, begins in full-scale, and in the middle of it all, The SGC contacts Atlantis and informs Woolsey that he is immediately being replaced.

Guest Stars:

TBA

Recurring Characters:

Galquek