|An episode from Stargate Atlantis|
The tower is launching Ancient drone weapons.
|Directed by||Andy Mikita|
|Produced by||Martin Gero|
|Original air date||
USA: February 3, 2006|
UK: February 8, 2006
|The team finds a world that possesses Ancient defense technology, where Colonel Sheppard finds himself a pawn in the rivalry between the heirs to the throne.|
- Jay Brazeau, the Lord Protector's portrayer, has already played the character of Harlan in the Stargate SG-1 episodes "Tin Man" and "Double Jeopardy".
- David Bloom, Eldred's portrayer, has already played two characters in Stargate SG-1; Scavenger in "Prisoners", and Spellman in "Fail Safe".
- Brendan Beiser, Tavius' portrayer, has already played the character of Weaver in the Stargate SG-1 episode "Memento Mori".
- Mark Gibbon, Constable's portrayer, has already played two characters in Stargate SG-1; Thor in "Thor's Hammer" and "Thor's Chariot", and M'zel in "Death Knell" and "Endgame".