The crane that lifted Karen into the air was over 100 feet tall. (The crane and its cables were both removed with visual effects).
The scene where Karen is lifted in the air by a wormhole was written to mirror the scene in the pilot episode where Brianna was abducted by a Skin Walker.
The graphics on the pinball machine in the diner was an original design made specifically for the episode.
Costumer Andrea Mah played as a photo double for Dana and Brianna during the episode.
Veteran actor Louis Ferreira, who plays Bob “Moondog” Black, used to be known by the stage name “Justin Louis”. In 2008, he changed it back to his birth name in honor of his mother’s Portuguese heritage.
The computer card reader obtained for this episode was the last of its kind for sale in North America.
During the shooting of the season finale, bright spots were observed on a halo around the moon. This is kind of rare lunar phenomenon is known as a "moondog". Call it poetic synchronicity.
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