When Comanksi describes Felicia, he says she is five foot four, Joan Jett who played Felicia is actually five foot five and a half.
When Comanski comes to question Richie about Felicia over the death of Devereux, we see Richie is wearing a red cord around his neck. The cord is knotted to his right, but when the camera switches to behind him, we can see the knot at the back of his neck.
The song Richie plays at the start of the episode is "Cherry Bomb" by Joan Jett, who appears in this episode as Felicia Martins.
Duncan slips up on Felicia on the beach. She is surprised by his voice. She should have sensed his approach.
In the final battle, Duncan and Felicia both go into the water. When they come out, both of them get a close up and when we return to the full shot, both of them are dry.
When Felicia comes out wearing Tessa's suit, both she and Richie start walking towards the left. As the camera pans, you can see briefly someone's foot caught in the shot.
Duncan: Remember, this isn't an Olympic event, anything goes.
Felicia: (knees Duncan in the crotch) Like that?
Duncan: (groans) Yeah, like that.
Richie: So MacLeod finally gave in.
Richie: I said so MacLeod finally gave in! He took down the Cornelli map!
Tessa: I'm sure he had his reasons.
Richie: Like maybe he was wrong but of course that could never happen.
Felicia: Tell MacLeod to meet me at Andrew's pier at the beach tonight at 8.
Tessa: What makes you think he'll come?
Felicia: If he doesn't, he won't be able to say buh-bye to little Richie!
Duncan: If I were to take your head of right now, I would receive all your knowledge and strength. That is the Quickening
Felicia: I'm afraid I don't have very much knowledge or strength.
Duncan: (smiles) Guess I better wait a while.
Richie: I'm young. My libido's in meltdown.
Tessa: Richie! The whole world can't revolve around your hormones level.
Duncan: (to Felicia) And you're a sitting target.
Tessa: And Richie's one as well.
Richie: Hey, I can take care of myself.
Duncan: Is that why your face looks like a blueberry pancake?
(Richie storms out and slams the door)
Felicia: You didn't have to put him down like that. He's very sweet.
Duncan: He could also be very dead.
Felicia: You really think I'd keep my money under the floorboards? My money's in Zurich.
Duncan: Yeah, where all old Immortals keep their money.
Cominski: Well, we do have a dead woman down at the morgue.
Tessa: Aren´t they usually dead - or do you sometimes make mistakes?
Richie: What was I supposed to say, 'I'm sorry you're having a bad day, now get lost'?
Tessa: (to Felicia) I may not be able to kill you, but I'll give you a facial you won't forget!
Queen's "Don't Lose Your Head" (from the original movie) is used for the first and only time in the series - during the fight between Duncan and Felicia at the end of the episode.
Flashback: France 1880's
Duncan: Matsumuni was a genius.
The character Matsumuni was the man who made the katana Connor McLeod got from Ramirez in the original Highlander movie.