It is established in this episode that, unlike other chief engineers in previous incarnations (TOS, TNG, and DS9), Torres doesn't exaggerate her repair times to make herself look like a miracle worker.
Trivia: This episode includes the first mention and appearance of Leola Root, which would become quite well known throughout the duration of the series.
Nitpick: When Tuvok scans the Kazon, he says they are from the Kazon Nistrim sect. But all Kazon ships are the same, since they were stolen from the Trabe, and the only Kazon sect they had encountered previously is the Kazon Ogla.
Janeway: Any unexpected life signs down there, commander?
Chakotay: Nothing but bloodworms. Neelix wants to take some back with us for a tartare he wants to make. I've tried to talk him out of it.
B'Elanna: Of all the things to die for... It's a food replicator, or at least it was trying to be.
B'Elanna: No, Captain. When I say 'tomorrow', I mean tomorrow. I don't exaggerate. Tomorrow is the best I can do.
Tuvok: How may I be honest with you today?
Chakotay: I'd just like to know from someone else who pulled the wool over my eyes. Was I particularly naive, was I not paying enough attention? What the hell was it that let all you spies get by me?
Tuvok: Like all humans, you depend on feelings and instincts to guide you, and they invariably let you down. But particularly naive? No, Commander, and I've always considered your attention span to be adequate.
Chakotay: Did you ever see anything about Seska that made you suspicious?
Tuvok: No. She quite expertly pulled the wool over my eyes as well.
Chakotay: Well, that makes me feel a little better. Thanks.
Tuvok: That my failure, added to your own, should improve your feelings.
Chakotay: Misery loves company, Tuvok.
Chakotay: I never knew Vulcans had such a talent for cards.
Tuvok: It is simply a matter of logical discards, which give a false impression of my own requirements and deny the needed cards to your hand. I believe that's ninety four points to me.
Chakotay: If you ever need a sponsor in a gin tournament, let me know.
Chakotay: The one thing I still can't understand, is why?
Seska: I did it for you. I did it for this crew. We are alone here, at the mercy of any number of hostile aliens, because of the incomprehensible decision of a Federation captain. A Federation captain who destroyed our only chance to get home. Federation rules. Federation nobility. Federation compassion? Do you understand, if this had been a Cardassian ship, we would be home now. We must begin to forge alliances. To survive, we must have powerful friends. The Kazon-Nistrim were willing to be our protectors in return for some minor technology.
Janeway: Minor technology that could change the balance of power in this quadrant.
Seska: Change it in our favour! That is all that matters at this point. Building a base of power in this quadrant. You are a fool, Captain. And you're a fool to follow her. I can't imagine how I ever loved you.
Seska: Oh, you don't think whoever did this is foolish enough to log in using their own name?
Chakotay: Chief Inspector Tuvok leaves no stone unturned.
Culluh: Our sensors show that you are trespassing on our vessel.
Janeway: As I've already informed you, we're attempting to retrieve the console that caused this explosion.
Culluh: If you attempt to remove anything from our ship, it will be considered an act of war.
Janeway: You know, I'm really easy to get along with most of the time. But I don't like bullies, and I don't like threats, and I don't like you, Culluh. You can try and stop us from getting to the truth but I promise you, if you do I will respond with all the 'unique technologies' at my command. Janeway out.
Janeway: There was a trace of a Federation compound in the remains of the explosion. We have reason to believe that someone on board this ship gave technology to your people. Until we have a better explanation of what occurred, I can't release that ship to you.
Culluh: That is not acceptable.
Janeway: It will have to be.
Culluh: Your unique technologies make you brave, Captain. But you have only one ship. In less than a day there will be four Kazon vessels off your bow.
Janeway: Perhaps by then we'll have the answers we need.
Janeway: Seska has spent most of the last two years as an enemy of the Federation.
Chakotay: So have I.
Neelix: You humans! You're not used to roughing it, are you? Well, you take it from one who knows. The day may come when you'll relish every last crunch of leola. Stewed for a few hours in a light herbal broth, ah, you wouldn't even notice the mildew.
Tuvok: The demands on a Vulcan's character are extraordinarly difficult. Do not mistake composure for ease.
Chakotay: (to Tuvok) You were working for her, Seska was working for them... was anyone on board that ship working for me?!
The working title for this episode was "Seska". But as Director Robert Scheerer noted, that "obviously gave everything away."
Spock Visual Allusion:
In the first few minutes before the opening credits while Chakotay is investigating a cave he walks past a large green illuminated rock which has a definite resemblance to the face of Spock from ST:TOS.