Douglas Darden laughter was the laughter of three young girls, who were, in essence, their clients: the fourteen year-old twins, Cass and Polly, and their nineteen-year-old friend, Helen. Cass and Polly are most likely feminized renderings of the celestial twins of Greek mythology, Castor and Pollux (better known as Gemini), and their sister, Helen of Troy. Many of his original sketches and drawings for Oxygen House are now owned by the Museum of Modern Art, along with a select few of "Sex Shop" drawings; gifts of Darden's widow. The remainder of his drawings are held at the Avery Architectural and Fine Arts
Castor et Pollux Pollux is resolute. The stage shows the entrance to the Underworld, guarded by monsters and demons. Phoebe gathers the Spartans to prevent Pollux from entering the gate of the Underworld. Pollux refuses to be dissuaded, even though Phoebe declares her love for him. When Telaira arrives and she sees Pollux's passion for her, Phoebe realises her love will be unrequited. She urges the demons of the Underworld to stop him entering ("Sortez, sortez d'esclavage/Combattez, Démons furieux"). Pollux fights the demons with the help of the god Mercury and descends into Hades. The scene shows the Elysian fields in the Underworld.