The Forms of Things Unknown - S1-E32
Continuity mistake: After running through the woods getting soaked by pouring rain, Casha arrives on Kollos' doorstep with her hair neatly coiffed and perfectly dry. In fact, within minutes of coming in out of the downpour, Casha, Leonora and Tone all have completely dry hair and clothes. (00:15:00)
Behold, Eck! - S2-E3
Continuity mistake: When Dr. Stone's assistant helps him up from the floor, there's a lopsided, circular diagram drawn on the chalkboard behind them. One shot later, the diagram has changed into a perfectly round circle and has moved itself several inches higher on the board. (00:06:10)
Dr. Paul Wayne: So what difference does it make, whether it's 20 minutes or 20 years, since neither amounts to the faintest echo of the tiniest whisper in the thunder of time.
The Forms of Things Unknown - S1-E32
Trivia: Part of Dominic Frontiere's haunting musical score for this episode later became the theme and background music for the TV series The Invaders, a show for which Frontiere served as the primary composer.