Elizabeth and Charles are playing "Passacaglia" by Nathan Aganoglu.
Kristina Wagner (Nora Avery) is the real ex wife of Jack Wagner (Bill Avery). Portraying the ex wife of Bill Avery. They married in 1993, and divorced in 2006.
Kavan Smith (Leland Coulter) and Paul McGuillon (Floyd Conklin / Frank Conklin, the con artist) previously worked on the same series, including Stargate: Atlantis, Stargate SG-1, and Sanctuary.