Season 4 Episode 5

Down the Rabbit Hole

Aired Friday 9:00 PM Oct 24, 2007 on CBS
out of 10
User Rating
272 votes

By TV.com Users

Episode Summary

The latest murder case takes Detective Taylor to a whole new world and he must figure out why Cheryl Duncan looks so life-like. They also discover something shocking about the murderer while online.

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  • Mac plays a video game to catch a serial killer

    This was a brilliant episode but it was different as Mac finds a victim that looks like a video game character and the killer is using the video game to find the victims and Mac is going to use it to find the killer.They find out that the killer is an assassin that is trained to kill giving Mac a hard time trying to track the assassin who turns out to be a woman.In the end she escapes and will no doubt be back.moreless
  • Out of ideas?

    The first or probably the only thing that comes to my mind watching this episode that the writers are completely out of ideas and are rambling here and there trying to put new stories together. I think this was one of the silliest episode I've ever seen. I'm sure teen-agers have appreciated or even somebody who's no more exactly a teen-ager, but this is not the kind of stories an adult audience wants to follow. Do they want to go on like this? Okay, next time would they at least be so kind as to let me see Mac and his team hunting Wall-E or ET, please?moreless
  • Absolutely loved it!

    There's not one thing I found to be bad about this episode. I loved every little part of it. Its interesting how they made it work with a website and real life, tracking the killer in both places throughout the episode. I have to say, that hall with the pictures of everyone that she killed on the website was creepy, but also so interesting that I didn't want to stop watching. It seems kinda weird how they chose to end it, but it only adds on to the mystery I guess. I give this episode a perfect 10, just like I do for most other CSI: NY episodes.moreless
  • I was on the edge of my seat watching this episode, lots of activity, well written

    Dag I wanted them to catch her so badly, I don't even remember the last criminal that got away from them and I'm wondering if she did get out of there because shouldn't the CSI:NY cops lock down the hotel and lock down each and every entrance so I want to know what happened after Mac realizes she ain't on the floor any more. I guess I will have to wait and see the next episode but this episode was an adventurous episode and I didn't expect them to go all into the cyberworld and be online like they were. The interaction with online and the real world was crazy and cool and this was something I never seen attempted on TV.moreless
  • One of the worst episodes ever. Second life is bad, using it in a show is even worse.

    All the events in the game where impossible and felt very bad to watch. Like the 'fight', letting them use a wireless keypad while standing in front of a big screen, come on. It doesn't work like this. You can't pick up a card with '2' and then magically get a virus which is able to infect the computer lab. And there isn't someone called 'the white rabbit' who knows where everyone is. That is what a search function is for.. Second life is just a slow and ugly videogame, inhabited by people who dress themselves as animals or huge genitals. This made the episode quite frustrating to watch. I'm not defending videogames here, I just hope using "popular" videogames doesn't continue in shows.moreless
Anna Belknap

Anna Belknap

Lindsay Monroe

Carmine Giovinazzo

Carmine Giovinazzo

Danny Messer

Gary Sinise

Gary Sinise

Detective Mack "Mac" Taylor

Melina Kanakaredes

Melina Kanakaredes

Detective Stella Bonasera

Eddie Cahill

Eddie Cahill

Detective Donald "Don" Flack, Jr.

Hill Harper

Hill Harper

Dr. Sheldon Hawkes

Kam Heskin

Kam Heskin

Suspect X

Guest Star

Jonathan Palmer

Jonathan Palmer

Congressman Devane

Guest Star

Dylan Bruce

Dylan Bruce

Young Man (Hostage)

Guest Star

A.J. Buckley

A.J. Buckley

Adam Ross

Recurring Role

Robert Joy

Robert Joy

Dr. Sid Hammerback

Recurring Role

Trivia, Notes, Quotes and Allusions


  • TRIVIA (7)

    • Mac's avatar, even though obviously younger, is a really realistic one. Mac is very recognizable in it, both in the facial expression, the clothing and the body language.

    • This is the second time this season that the lab is vulnerable to an outside attack. The lab's computers have been invaded by virus or outside programs both in this episode and in 4x03 You Only Die Once.

    • Adam is a Second Life resident.

    • In the show, a flying chase scene is performed with a hoverboard and jetpack. In the real Second Life, while this is definitely possible, such chases are pointless as a fleeing individual can always teleport elsewhere or simply disconnect.

    • Goof: In the show, an avatar's head is cut off during an arena match. In the real Second Life, this can be engineered as a visual effect with sophisticated modelling and the co-operation of the other avatar, but it cannot be done by default nor with any combat system currently available.

    • This episode was unique because it combined both live actors and virtual avatars from the online world Second Life.

    • Goof: In this episode, newly created avatars are very quickly outfitted with custom appearances and skins before entering a welcome area. In the real Second Life, the starting inventory is not generally sophisticated enough to reproduce Mac's avatar, and many avatar details would need to be created, uploaded, or purchased from other sources in-world.

  • QUOTES (13)

    • Stella: (To Mac) Still not sleeping, huh?

    • Flack: (To Mac after knowing that Peyton broke up with him) Did you know it was coming?

    • Adam: Uh, dude, uh, I, I, I, I mean, sorry, boss. Uh, with all due respect? You don't stand a chance.
      Mac: And you do.
      Adam: I got skills. I think so.
      Mac: All right, Adam. You lose, we lose the only solid lead we have.

    • Adam: Boss, if you go in-world looking like Joe Boring you're gonna get flagged as a newbie. Let me get in here real quick. Check this out. Hip do, a little custom skin. Cool coat. All right. Check it out. Now you're ready to roll in-world.

    • Mac: Second Life?
      Adam:It's a metaverse, an online social network inside a virtual world. First Lifers, guys like us, we log on, create 3-D virtual characters. Cruise simulated worlds, make friends, start businesses.
      Danny: Why?
      Adam: It's fun?
      Danny: (Skeptical) It's fun.

    • Mac: Where'd you get this?
      Adam: Google Images.
      Mac: The Internet?

    • (Mac's cell phone rings)
      Hawkes: You gonna answer that, Mac?
      (Zoom into Mac's watch reads 3:33)
      Hawkes: It's early. Probably important.
      (Mac turns off his phone)

    • Flack: He was dancing.
      Mac: By himself?
      Flack: Not exactly. Turns out Mr. Romano's wife died five years ago. So every year on their wedding anniversary, he grabs a mannequin and does a little tango.

    • Adam: Double click on that template. Now, male or female?
      (Mac just looks at him, eyebrows raised)
      Adam: This is fantasy, be all you can be!

    • Stella: (Looking at Mac's female avatar) Wow. Who's the tacky dresser?
      Mac: That's me.

    • Stella: I could use some good news.
      Lindsay: Only 61 days until Christmas.

    • Adam: (while fighting warriors in Second Life) Who's your daddy?

    • Stella: You have no game whatsoever.
      Mac: Look, I don't need a backseat avatar.

  • NOTES (7)

    • Lindsay Pulsipher, who plays Cheryl Miller, also appears in the C.S.I. episode Shock Waves and in the CSI: Miami one Wheels Up.

      Jonno Roberts, who plays Samson Rowe, also appears in the CSI: Miami episode About Face.

    • Spanish episode title: Descenso por la Madriguera, meaning Down the Warren.
      French episode title: Enquête Virtuelle, meaning Virtual Investigation.

    • This episode will find its conclusion in 4x15 DOA For A Day.

    • While the number of Second Life simulators purchased by CBS is not exactly known it is theorized to be nearly one million US dollars. This would also support the theory of there being more CSI episodes in the future involving Second Life.

    • International Air Dates:
      Norway: January 16, 2008 on TVNorge.
      United Kingdom: February 9, 2008 on Channel 5.
      Sweden: February 18, 2008 on Kanal 5.
      Denmark: March 3, 2008 on Kanal 5.
      Turkey: March 31, 2008 on CNBC-e.
      Spain: April 1, 2008 on AXN Spain.
      The Netherlands: April 2, 2008 on RTL4.
      New Zealand: May 20, 2008 on TV 3.
      Australia: June 9, 2008 on Network 9.
      Slovenia: September 25, 2008 on POP TV.
      Germany: September 29, 2008 on VOX.
      Finland: April 15, 2009 on MTV3.
      Slovakia: July 16, 2009 on JOJ.

    • Music featured in this episode:
      Mambo Italiano by Gino Federici.
      Por Una Cabeza by The Tango Project.
      Hyperpower! by Nine Inch Nails.
      Exit by Stateless.

    • Starting with this episode viewers will help solve the crime with Second Life, by joining


    • Mirrors, glass and screens are usually regarded as portals to other worlds. Second Life, the episode title and two side mirrors in this episode are allusions to Alice's Adventures in Wonderland and Through the Looking Glass.

    • Sid: Cosmo. My dentist subscribes.

      Cosmopolitan is a women magazine, usually referred to as Cosmo.

    • Danny describes the Second Life romance as looking for Mr. Goodbyte.

      Mr. Goodbye is a 2006 drama tv series.

      Also, Looking for Mr. Goodbar is a 1977 movie starred by Diane Keaton, in which a young woman cruises bars looking for the perfect man.

    • Mac: Adam, I don't have time for this. I need to find Johnny O'Dell's avatar, Don Juan-2-3.

      Don Juan is a fictional libertine that appear in many fictional novels and plays.

    • Adam: Google Images.

      Google is an internet site that provides internet search, e-mail, online mapping and video sharing services among others.

    • Adam: Be all you can be, right?

      Be all you can be used to be a recruiting slogan for the United States Army.

      This same line is alluded to in Season 2 Episode 6 Youngblood by Flack.

    • Episode title: Down the rabbit hole.

      The title is a reference to Lewis Carroll's Alice through the looking glass, where the white rabbit goes through the rabbit hole and Alice follows.