Goof: During the car chase, KITT says there is a semi truck obstructing the road ahead and that the assassin will collide with it. Although a semi does enter the road, the actual obstruction is a pickup truck.
When we first see the antidote, it is bright blue. However, when we see it the second time, before the vial is smashed it is dark purple.
KITT morphed into a van and a police car for the first time.
The license plate number of Sarah's silver Ford Escape is 6EXI928.
Mike: KITT, I need the time and location for the pick-up. KITT: Relax, man. I got this. Mike: Cute.
Alex: (To Mike) He almost got the drop on you. Mike: Almost only counts in hand grenades and horseshoes.
(Mike has been telling the truth about everything and everyone is getting upset with him for what he is saying) Torres: What did you say? Mike: I don't know, can the poisoned guy get a break here?
Torres: Tell me where they are or I'll remove all your spark plugs. KITT: I don't have spark plugs.
Mike:(About KITT morphing) Yeah, that does not get old.
Sarah: You should get poisoned more often. May be the only way we're going to get a day off. Michael: Funny, I was considering poisoning myself right now, actually. KITT... KITT: Yes, Michael? Michael: Initiate beer run program. KITT: Michael, my database contains no such program and it is illegal to have open alcoholic beverage containers on the beach. Michael: I'm joking, KITT. KITT: Your attempt at humor would suggest that you are well on the way to recovery. Michael: What do you mean attempt at humor?
Michael: Do you know that Billy calls you the Asian Sensation behind your back? Billy: Dude! Michael: Can you pretend I didn't just say that? Zoe: (smiling at Billy) Truth serum is fun!
Sarah: According to this, we're not dealing with one poison, but a combination of toxins. Most predominantly, hyoscine... which acts as a hallucinogen and truth serum. Zoe: Truth serum? (turns and smiles at Michael) You ever fantasize about Sarah in a Catholic school girl outfit? Michael: No. Zoe: Hmmm... clearly not working yet.
In the Czech Republic, this episode named A Hard Day's Knight is named PernĂ½ den.
International Air Dates: United Kingdom: June 9, 2009 on Sci Fi/Sci Fi HD Slovakia: January 12, 2010 on JOJ Australia: June 23, 2010 on 7TWO Czech Republic: August 10, 2010 on Prima
Although credited, Bruce Davison (Charles Graiman) does not appear in this episode.
KITT: Do or do not. There is no try. This is a reference to Yoda in George Lucas's movie, Star Wars: Episode V - The Empire Strikes Back (1980). During his Jedi training, Luke Skywalker replies to Yoda's instructions with "I'll give it a try." Yoda replies, "No. Try not. Do or do not. There is no try."
S 4 : Ep 22
(48:29)
S 4 : Ep 19
(48:32)
S 4 : Ep 13
(48:25)
S 4 : Ep 11
(48:25)
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