Jodelle Ferland (Harmony) previously portrayed Adria (age 7) in Stargate SG-1 (1997)'s Flesh and Blood (2006).
This is the first episode in which neither the interior nor exterior of Atlantis appear on screen.
This is the first and only episode to feature only two members of the regular cast: Joe Flanigan (John Sheppard) and David Hewlett (Rodney McKay).
Yan-Kay Crystal Lowe who plays the sister Mardola, also played on the Stargate SG-1 (1997) Season 1's Emancipation (1997), as Nya.