Elizabeth and Julie do not appear in this episode, and it is mentioned that they are "up north at the research center."
Robert is the Fifth Columnist who unwittingly provided the false information about the Mentamorph to Willie.
Angela was found by Philip on Andromeda's moon. Revealing her adversarial relationship with Philip, she suggested that he should have killed her when his armies killed the rest of her people. Later, she remarks that her "tribe will finally have revenge" as she is about the shoot Philip.
Glenda exhibits the characteristic green discoloration around the neck of a pregnant Visitor female (as Robin did in The Final Battle).
Water should not be present during a Visitor birth.
Willie makes an impromptu bath of rock salt and motor oil for the Visitor baby and explains that "it's very soothing and good for the scales."
Quote from Robert: "Your world is a wonder. It is worth fighting for."
War of Illusions
The episode opens with Diana and Lt. James in bed together. Apparently he's won her affections and promised his loyalty to her. But later in the episode, Oswald arranges for Diana to pick a new consort to entertain her — it seems she's lost her fascination with a certain you-know-who (James is not mentioned by name, though).
Julie does not appear in this episode. It's mentioned that she's in Fresno.
The antonyms "perigee" and "apogee" are both mentioned by Diana in the first few minutes of this episode — the former in reference to the Visitor celebration of the "annual perigee of their sun star" and the latter in reference to the Battlesphere "reaching its apogee."
Lydia reveals that Oswald enjoys performing "perverted" experiments on humans. Oswald defends it as his "art."
The Battlesphere looks like a consumer plasma ball and emits sound effects like those on the bridge of the Enterprise in classic Star Trek episodes.
Dr. Atkins is described by the Visitors as a "psycho-cybernetics professor" from Cal Tech.
Henry's computer used to hack into the Visitor systems appears to be a TRS80 Model 100.
Diana and Lydia present Philip with a report from internal security regarding the investigation into who stole the Battlesphere plans. With an obvious insinuation, the women note that a sentry visited Philip's quarters at the same time the plans were stolen, and the Supreme Commander wasn't in his quarters at the time. Philip reminds them that he doesn't need to account for his whereabouts, especially to his subordinates. He warns them that to suggest he is a Fifth Columnist is grounds for an immediate court martial.
When Philip arranges for Dr. Atkins's escape, he tells the man he's part of the Fifth Column, officially establishing his new allegiance on screen for the