Continuity mistake: At the end when they are confronting Harmony, they pick up the water glass for DNA testing. In the next shot over her shoulder, the glass is still on the table. (00:36:55 - 00:38:09)
Continuity mistake: Episode 6.4, Libra Slayer: In the opening scene, in the hospital, the man leans over the dying patient to hear what he has to say. His cheek is almost touching the patient's lips. Then the angle changes and their faces are suddenly quite far apart.
Plot hole: In this episode, the Duboises make such a big deal about Ariel being old enough to finally learn to drive. However, two episodes previously ("Things to Do in Phoenix When You're Dead") Ariel drove to school with Joe, and Joe complimented her on her prowess.
Allison Dubois: I just had a weird dream.
Joe Dubois: Of course you did. It's a day ending in "Y."
Trivia: In "Four dreams" the alternative Allison who doesn't have children looks at some kids in a restaurant and gets a dreamy look on her face. The mother of the children she is admiring addresses her daughter as "Sofia". The "real" Allison's daughter Ariel is played by actress Sofia Vassilieva.
