This is generally regarded as one of the worst Babylon 5 episodes. Straczynski agreed with this assessment, apologizing for the episode, noting that the "Zarg" monster was particularly ineffective. (edit) Robert Englund, known as "Freddie" from the Nighmare on Elm Street-movies, has a guest role as the character Jeremiah. (edit)

Supervisor: It's like he disappeared into thin air.
Garibaldi: Thin air. Why is it always thin air? Never fat air, chubby air, mostly fit could stand to lose a few pounds air? (edit) Marcus: I'm in awe, Lennier. The way you take a straightforward logical proposition and turn it inside out so that in the end it says what you want it to say, instead of what it actually means. Did this come naturally, or did you attend some special martial arts class for the philosophically inclined? (edit) (As Neroon starts to walk away.)
Marcus: The next time...
(Neroon moves closer)
Marcus: The next time you want a revelation... could you possibly find a way that isn't quite so... uncomfortable? (edit) Neroon: I've just broken two of your ribs. [Hits Marcus again] Sorry, make that three. (edit) Marcus: I am a Ranger! We walk in the dark places, no others may enter. We stand on a bridge, and no one may pass. We live for the One. We die for the One. (edit) Neroon: There is now blood between us, and there is blood between the Warrior Caste, and the Humans. I do not think they would die for me. But they would die for you ... Entilzha.. (edit)

This episode does not have any trivia. Add some now!

Dr. Franklin indicates that his name on the underground telepath railroad is "Harriet." This is a reference to Harriet Tubman, who ran the underground railroad to help slaves escape from the antebellum south. (edit)