Goof: When Danny and Lindsay are looking at the overalls in the doctor's embalming room Danny says: "Kirkbalm had a close contact wound to the face..." However, if you watch closely you'll see he says: "Kirkbalm had a close contact wound to the head..." The audio was changed after filming.
Goof: When Danny and Sid are doing the deconstruction of the vic's face to see what she looked like her hair color changes. When she is on the table in autopsy her hair is blond but the image of her that Danny is working on shows her with dark brown hair.
Goof: When Sid initially x-ray's the vic's head, the knife is a single edged blade with a saw tooth edge along the lower part of the cutting edge only. However when the knife is removed it's a dual edge blade with saw tooth edge along one entire side.
Contrary to Flack, Danny is not a sci-fi fan since he just remembers Star Wars as some vague thing from his childhood.
Suspect X seems not to have any trouble running and leaping through the construction site in her high heels.
The scene were Angell is sitting in a plaza next to a wall fountain is the lower plaza at the Sherman Oaks Galleria. PF Chang is on one side, Macaroni Grill on another and Cheesecake Factory at the other end. Kinda funny.
The building where the first vic is found is next to Venetti's Meat Packing, which is the place owned by the tiger vic from 2x03 Zoo York.
Jordan Gates met Mac at Gracie Mansion after her ex-husband stalked her.
Goof: When Mac dives for cover behind the concrete bricks, you see bullets hitting them and leaving impact marks. But when Mac pops back up, the top stone is undamaged.
Mac: (To Adam) Soldiers wounded in action sometimes keep the shrapnel that's pulled from their bodies. It's like a little reminder of how close they came to dying.
(Mac talks to Suspect X, an assassin he has wounded.)
Mac: Who are you?
Suspect X: Anyone you want me to be, detective. Friend. Lover. Fantasy. Nightmare. Take your pick.
Mac: Based on the amount of blood leaving that hole I put in your chest, I'll go with dead.
Suspect X: That's not on the list.
Mac: This is all just a game, isn't it? Tell me, what goes through your mind, when you end a life.
Suspect X: Besides playing God?
Mac: You don't have much time. Give me something.
Suspect X: A confession? Pulling the trigger is like taking a deep breath of fresh air. Seeing that last little speck of life in their eyes, then when it fades, I don't know (coughs) I believe they're going to a better place.
Lindsay: (Sees a cat run up the stairs) So much for sterile conditions.
Flack: Bring anything else?
Lindsay: All access pass. (Lindsay holds up the warrant)
Mac: Six and a half inch, black powder-coated blade, sawtooth back. This is a Navy Seal combat knife.
Sid: Now if only there was a game show that called for that kind of knowledge. You'd be able to retire early.
Mac: I'd miss your wit.
(Angell is putting on her Kevlar vest and notices Flack looking at her)
Flack: You look good in a vest.
Angell: (smiles at him)
Adam: (to Mac about the way Suspect X found her clients, laughing) It's brilliant! (gets funny look from Mac and stops smiling immediately) And it's... it's evil, really evil.
Danny: Hey Linds! (walking up to her)
Lindsay: Oh Danny! They're beautiful! Nothing says you're special like centrifuge tubes filled with DNA samples.
Danny: I'm not gonna live this down, am I?
Lindsay: Forgetting my birthday? Probably not. Where did you get these?
Danny: Adam found more blood samples on the knife. There was a piece of shrapnel hidden inside the handle. You run the blood he found on the hilt?
Lindsay: (turning her back on him and talking with a rather upset voice) Yup, came back non-human. Send it to serology for protein analysis.
Danny: Lindsay, come on. Guys, we are not wired for remembering dates, okay? We remember sports stats and then steak sides, that sort of thing, alright?
Lindsay: (sighs and turns back round, facing Danny) Steak sides? You are so busted!
Mac: This woman was a skilled and trained assassin. Whoever did this had to be better.
Stella: Who kills a professional killer?
Spanish episode title Muerta por un Día, Dead for a day.
French episode title: Madame X, meaning Mrs. X
Aly, Walk With Me by The Raveonettes.
Pump by The B-52's.
Fancy Footwork by Chromeo.
Original International Air dates:
UK: April 19, 2008 on Ch5.
Denmark: May 12, 2008 on Kanal 5.
Venezuela: May 22, 2008 on AXN.
Turkey: June 9, 2008 on CNBC-e.
Spain: June 10, 2008 on AXN.
Australia: June 23, 2008 on Network 9.
Sweden: July 21, 2008 on Kanal 5.
New Zealand: July 29, 2008 on TV3.
Czech Republic: September 16, 2008 on AXN.
Norway: Wednesday, October 8, 2008 on TVNorge.
Greece: December 30, 2008 on SKAI (a four hour special on CSI featuring 1 CSI, 2 CSI: Miami, and 1 CSI: NY episodes).
Finland: June 24, 2009 on MTV3.
This is the first episode to be written and filmed since the ending of the 2007 WGA Strike.
This episode is the conclusion to 4x05 Down The Rabbit Hole.
DOA For A Day was to air 2/6/08 to tie in with the solving of the case on Second Life.
Russ McHenry has prosthetic legs as a result of a war injury. In the movie Forrest Gump, Gary Sinise played Lieutenant Dan, who had prosthetic legs as a result of a war injury.