Cast and crew talk about Season One of 'Numb3rs'

How 'Numb3rs' came to be, and information regarding the unaired first pilot for Paramount

Mark Saks, casting director, showcases tape auditions of cast members from 'Numb3rs'.

Gary Lorden, Head of Caltech Math Department, discusses his consultation with 'Numb3rs', and the math behind the show

Bradley Powell talks about how the visual sequences involving Charlie's math visualization were developed for 'Numb3rs'

Watch cast of 'Numb3rs' flub lines in this Season One gag reel.

Crew talk about developing components for 'Rampage' episode in Season Two, and still developing feel of 'Numb3rs' in it's sophomore season.

Go behind the scenes of 'Numb3rs' with David Krumholtz in this Season Two DVD special feature. Follow the actor who portrays Charlie Eppes interact with fellow cast members behind the scenes in candid moments shot with consumer video equipment.

Watch cast of 'Numb3rs' flub lines in this Season Two gag reel.

Discussion of developing cast character development and expansion in season 3 of 'Numb3rs'

The use of the Eppes family home, the set development, and the focus of the Craftsman residence of the Eppes family.

Go on a guided tour of the Eppes family home set on 'Numb3rs' with the Eppes family cast members.

Watch cast of 'Numb3rs' flub lines in this Season Three gag reel.

Part One of a five-part special feature presentation discussing the details involved with Season Four of 'Numb3rs' Crew discussions about pre-production planning to make 'Numb3rs' happen.

Part Two of a five-part special feature presentation discussing the details involved with Season Four of 'Numb3rs' Crew discussions about how executive producer Tony Scott pulls his style and sense from film production into updating and refining the characters and plots of 'Numb3rs'

Part Three of a five-part special feature presentation discussing the details involved with Season Four of 'Numb3rs' Crew discussions about the planning and logistics of staging an armored car ambush and explosion under a busy Los Angeles freeway for 'Numb3rs'

Part Four of a five-part special feature presentation discussing the details involved with Season Four of 'Numb3rs' Crew discussions about the planning and logistics of shooting a freighter assault scene at sea.

Part Five of a five-part special feature presentation discussing the details involved with Season Four of 'Numb3rs' Crew discussions about the distinctive visualization effects and post-production techniques adapted in Season Four of 'Numb3rs'.

The cast and crew celebrate the 100th episode of NUMB3RS.

A behind the scenes tour and look at the Eppes House. Led by the three Eppes.

Watch cast of 'Numb3rs' flub lines in this Season Five gag reel.

Deleted scenes from Season 5 Episode 8 "Thirty Six Hours".

Interviews and discussions with the female actors of NUMB3RS.

Pixel Perfect The Digital Cinematography of NUMB3RS a look at how NUMB3RS is created digitally without any film.

A discussion and interviews with the people involved in the series NUMB3RS talking about the success of the six seasons of the show.

To help capture a serial rapist-turned-killer, FBI Special Agent Don Eppes recruits his genius brother Charlie, who uses a mathematical equation to identify the killer's point of origin by working back from the crime scene locations.

Charlie accurately predicts where a band of bank robbers will strike next. But when Don and his team confront them, a massive shoot-out occurs leaving four people, including an officer, dead. The outcome disturbs Charlie and he retreats into the family garage to work out an unsolvable math problem that he also plunged into after his mother became ill a year earlier. But Don needs his brother's help and tries to get Charlie to return to the case.

Various people in the L.A. area with seemingly nothing in common start to become extremely sick and die on the same day. Don fears bioterrorists may have released a deadly virus into the environment. While he tries to discover whether anyone is behind the outbreak, Charlie tries to locate the point of origin.

After an engineering student at CalSci is found dead from an apparent suicide, Charlie convinces Don to launch an investigation after he reads the student's thesis that asserted that the architecturally magnificent Cole Center in Los Angeles is structurally unstable. Although reluctant at first, Don and his FBI agents discover that the student's findings were correct and uncover a dangerous and surprising conspiracy. Meanwhile, Alan prepares for a first date and convinces Don and Terry to join them, hoping they might rekindle their old romance.

When a five-year-old girl is kidnapped from her birthday party, Don and Terry lead the investigation, but must rely on Charlie's help because the girl's father, Ethan, is also a mathematician. Charlie realizes the kidnapper's motive when Ethan reveals he is close to solving Riemann's Hypothesis, a difficult math problem. If solved, the solution could not only earn him $1 million, but could break the code for internet security and unlock the world's biggest financial secret.

While consulting with the NTSB at the scene of the wreck, Don learns that this tragedy is one of a series of recreated accidents involving railroad negligence. As is the pattern with the previous train wrecks, an undecipherable numerical code is left at the site, which Don recruits Charlie to solve. By breaking the code, Charlie is able to establish that this accident was a recreation of a deadly wreck that left only one survivor several years ago. Don's investigation leads him and his team to a dangerous standoff with their suspect, who has surprising ties to the railway system.

Don learns that counterfeiters are at work producing small-denomination bills, and that they have taken an artist hostage to draw the images for the fake money. If the missing woman isn't located soon, Don fears that she will be killed when her work is finished on the phony cash. The counterfeiters have already murdered at least five people, two of whom stole money from them. The case is made more difficult for Don when his former lover, now a Secret Service agent, is assigned to it.

A man wanted for stock fraud is found garroted in his apartment, and the crime is eerily similar to a murder committed a year earlier, a case in which Don closed when an ex-con confessed. Now, Don must re-investigate the old case to determine if he put an innocent man in jail. He asks Charlie to go over the evidence to see if he missed anything the first time around.

The city is in a panic as a sniper goes on a shooting spree and randomly kills several people, including a postal worker. The investigation reveals that more than one shooter is at work. As Charlie works the case, he's frustrated by a sniper expert Don brings in to help out.

A truck carrying radioactive material is stolen, and the thieves threaten to set off a dirty bomb in L.A. in 12 hours if they aren't paid $20 million. While Don attempts to track down the truck, Charlie tries to come up with the most likely location where the bomb may be detonated to inflict the most damage to the population.

A senior computer-science researcher working on a classified government project is found murdered in his Hollywood Hills home and data has been stolen from his computer. The investigation reveals the victim was going through a bitter divorce and was trying to keep his wife from getting his money. Charlie also learns the project on which the man was working might have involved baseball.

Don and Agent Weston of the NTSB investigate eyewitness accounts of a mysterious unidentified object flying dangerously close to downtown Los Angeles that has raised concern of a terrorist attack. After Charlie is recruited to help with the investigation, it is discovered that the flying object is part of a new technology that could revolutionize air travel. But the investigation takes a turn when they learn that the lead engineer is found murdered.

A dangerous felon escapes when a prison bus crashes and the FBI has reason to fear he's intent on revenge against the witness whose testimony put him in jail. However, finding the elusive killer proves to be a complicated challenge. Don teams up with Agent Billy Cooper, his former partner from the FBI's Fugitive Recovery Division, and Alan worries that Don's going to return to a more dark and obsessive time in his career.