Numb3rs - Season 2

First aired: 9/23/2005 24 episodes

Season two has several changes to Don's FBI team: Terry Lake is reassigned to Washington and two new members join Don and David Sinclair: Megan Reeves and Colby Granger. Charlie is challenged on one of his long-standing mathematical workpieces and starts work on a new theory, cognitive emergence theory.

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Episodes

1. Judgment Call

Aired: 9/23/2005

Don and Charlie investigate the murder of a judge's wife who was shot in her garage. It's unclear whether she was the intended target or her husband, who was hearing a death penalty case involving a gang leader. As the investigation continues, Don reconnects with a prosecutor whose life may also be in danger.

2. Better or Worse

Aired: 9/30/2005

Don and his team are called in when a woman attempting to rob a jewelry store in Beverly Hills is shot by a security guard. Charlie assists the FBI by using the keyless remote from the woman's car to help identify her and locate the store owner's kidnapped wife and daughter.

3. Obsession

Aired: 10/7/2005

The FBI becomes involved in the stalking of a popular singer after she is threatened by an intruder in her house and reveals a series of threatening letters she's received through the mail. Charlie determines the letters are from two different people after analyzing the handwriting. When a photographer is found dead near the singer's house, Don believes the photographer was murdered and his death is somehow related to the stalking case.

4. Calculated Risk

Aired: 10/14/2005

Don and Megan are called to the murder scene when the CFO of a powerful energy company - who was about to testify against her fellow executives - is murdered at her home and her son is the only witness. Knowing there could be thousands of disgruntled ex-employees, Don asks Charlie to narrow the list.

5. Assassin

Aired: 10/21/2005

Don uncovers a secret code that begins the hunt for a skilled and trained assassin, and the efforts by the FBI to save the life of a Colombian exile living in Los Angeles.

6. Soft Target

Aired: 11/4/2005

Don and his team are summoned to locate the person who released potentially lethal gas in the city's subway system.

7. Convergence

Aired: 11/11/2005

When a father is killed in a home invasion, Don and his team investigate the connection between the murder and a rash of robberies in the upscale community.

8. In Plain Sight

Aired: 11/18/2005

Megan feels responsible for an agent's death following an explosion at a meth house the FBI had targeted for a bust. When the kingpin eludes capture, it's discovered he may also be involved in child pornography when one of the photographs on his computer turns out to be a young girl in a sexually explicit position. The picture sends Charlie on a crusade of his own, as he remembers a girl he knew as a young child that he suspected was being abused, and he's determined to save the little girl in the picture.

9. Toxin

Aired: 11/25/2005

After four people nearly die from poisoning, Don learns someone is tampering with nonprescription drugs. When the perpetrator publishes a manifesto in a local paper, Don is led to believe the person may be a former employee of the drug company that manufactured the drug.

10. Bones of Contention

Aired: 12/9/2005

When a researcher who specializes in Native American antiquities is killed at the museum where she works, the FBI is called in because the museum is on federal land.

11. Scorched

Aired: 12/16/2005

An arsonist sets a fire at a car dealership that kills a sales person. The name of an extremist environmental group is spray-painted on the scene, but the group denies involvement. It becomes Don's task to determine whether the group or someone else is responsible. Charlie is called in to help figure out if there is a pattern to the fires that would help provide a profile of the arsonist.

12. The O.G.

Aired: 1/6/2006

When Don and his team are called to the scene of the murder of a Los Angeles gang member, they learn they are investigating the murder of another agent who had been working undercover.

13. Double Down

Aired: 1/13/2006

A murder investigation at a Los Angeles card club leads the FBI to a complicated card-counting scheme involving college students.

14. Harvest

Aired: 1/27/2006

When an Asian teenager is found in the basement of an old downtown hotel where she was apparently being tortured, the investigation soon reveals the girl and three other missing women, are victims of a black market organ-harvesting scheme. Amita assists the FBI by communicating with the girl, who is from the same part of India where Amita's family once lived.

15. The Running Man

Aired: 2/3/2006

When a DNA synthesizer with the capability of customizing diseases is stolen from the campus where Charlie teaches, Don fears the thieves may be terrorists out to start or advance a bio-warfare program and also believes the theft was an inside job.

16. Protest

Aired: 3/3/2006

Don and his team investigate an anti-war bombing outside an Army recruiting center that resembles the work of a 1970s anti-war activist who disappeared 30 years earlier after being accused of planting a bomb that killed two people. Retired Agent Thomas Larson, who tried to solve the case 30 years ago, returns to help but questions Don's loyalty when it is revealed Alan knew the radical activist and participated in demonstrations with him, thus causing tension within the family.

17. Mind Games

Aired: 3/10/2006

Don and his agents are asked to investigate when a search team finds three dead women in the wilderness who were apparently murdered under bizarre circumstances. The case becomes more suspicious when Don learns the search team was led to the crime scene by a psychic. When the psychic offers to help the FBI in solving the crime, Charlie is determined to prove the psychic is a fraud.

18. All's Fair

Aired: 3/31/2006

In an effort to find the murderer of an Iraqi woman who had been making a documentary that promoted the rights of Muslim women, Don enlists the help of the victim's cousin. Through her cousin, Don uncovers a connection to Saddam Hussein. Back at home, Charlie rekindles a romantic relationship with a former girlfriend when she visits him while on a book signing tour.

19. Dark Matter

Aired: 4/7/2006

Don and his team investigate a school shooting. He learns two students could have a strong motive, so Charlie uses the school's radio frequency identification system to track the shooters' movements through the school's hallways. When Charlie detects an abnormal pattern, the agents take a look at the evidence and discover a third participant no one had suspected earlier.

20. Guns and Roses

Aired: 4/21/2006

When an ATF agent is found dead under unusual circumstances, Don wants to take the case, which revolves around an elaborate bank robbery, after he learns the victim was his former girlfriend. He then becomes quite introspective as he realizes the impact his career has had on his personal life and decides to turn his attention toward a new woman.

21. Rampage

Aired: 4/28/2006

When an assailant opens fire in the FBI offices, Don and his team must determine his motive and possible connection to a dangerous arms dealer who is on trial. After nearly getting shot, Charlie is shaken and reluctant to return to the offices, which hinders his contribution to the case.

22. Backscatter

Aired: 5/5/2006

An FBI investigation into a computer hacking scam that taps into a bank's system to gain access to the identities and financial assets of its customers becomes personal for Don and the Eppes family.

23. Undercurrents

Aired: 5/12/2006

The FBI becomes involved when the bodies of young Asian girls are washed up on the beach. The situation becomes more critical when it is discovered one girl has avian flu. As the investigation continues, Don and his team discover a connection between the girls and the sex trade industry. Meanwhile, Amita considers a transfer to Harvard University, which causes Charlie to re-evaluate his feelings for her.

24. Hot Shot

Aired: 5/19/2006

Don investigates the murders of two young women found in their cars outside their homes. Their deaths were made to look like drug overdoses, but Don realizes a serial killer is responsible. Meanwhile, Charlie is having bizarre dreams about his parents. In one dream, his deceased mother appears and tells him he has a question to ask her, but he can't imagine what it could be.