Kelly Vint Castro (American Agent) previously played the young Catherine Langford in Stargate (1994).
The 10-episode series was also edited together and released as a movie, Stargate Origins: Catherine (2018).
Connor Trinneer (Professor Paul Langford) previously played Michael Kenmore in Stargate: Atlantis (2004).
The series takes place in 1928 and 1939.
Kelly Vint Castro played the young Catherine Langford in the original Stargate movie from 1994. Footage from that movie is used at the very beginning of this movie. She returns to the franchise here in a small cameo playing "American Agent".