The show focuses equally on the relationships between Don Eppes, his brother Charlie Eppes and their father, Alan Eppes (Judd Hirsch), and on the brothers' efforts to fight crime, normally in Los Angeles. A typical episode begins with a crime, which is subsequently investigated by a team of FBI agents led by Don and mathematically described by Charlie, with the help of Larry Fleinhardt (Peter MacNicol) and Amita Ramanujan (Navi Rawat). The insights provided by Charlie's mathematics are always in some way crucial to solving the crime.
Numb3rs - S03E03 - Provenance(Aired: 6 October 2006) The robbery of a painting that unexpectedly turned to murder, has the team exploring a disputed provenance and possible insurance fraud.
Numb3rs - S03E04 - The Mole(Aired: 13 October 2006) The hit-and-run death of an interpreter may compromise a team member, and Charlie must deal with not being consulted for a paper.
Numb3rs - S03E05 - Traffic(Aired: 20 October 2006) Charlie and the team grapple with the concept of 'randomness' while trying to find a killer targeting drivers on the freeway.
Numb3rs - S03E06 - Longshot(Aired: 26 October 2006) Don and the team investigate a suspicious death at a horse track. When Charlie starts looking into the crime, he uncovers something that will send the investigation into an entirely different direction.
Numb3rs - S03E07 - Blackout(Aired: 3 November 2006) Blackouts all over Los Angeles leave the city in the dark. Don works with his team to figure out if the power outages are an accident or the work of terrorists.
Numb3rs - S03E08 - Hardball(Aired: 10 November 2006) The death of a minor league player leads to a math prodigy and stirs old feelings for Don.
Numb3rs - S03E09 - Waste Not(Aired: 17 November 2006) Charlie's investigation of a company's toxic paving material is impeded by a new school administrator who wants him to focus primarily on his pure academic work instead.
Numb3rs - S03E10 - Brutus(Aired: 24 November 2006) The assassination of a California senator leads the team to questionable experimentation on prisoners, the CIA, and a man bent on revenge. Elsewhere, Larry makes an announcement that shakes Charlie.
Numb3rs - S03E11 - Killer Chat(Aired: 15 December 2006) The team tries to track the person murdering men in homes that are for sale, and Larry's dream of space may be in jeopardy.
Numb3rs - S03E12 - Nine Wives(Aired: 5 January 2007) The search for a pedophile polygamist takes an interesting genealogical turn when a quilt is found.
Numb3rs - S03E14 - Take Out(Aired: 2 February 2007) Multiple robberies at upscale restaurants bring Don's team in once it escalates to murder. Elsewhere, both Charlie and Don must do some soul searching as one tackles a psychiatric review ... See full summary »
Numb3rs - S03E15 - End of Watch(Aired: 1 November 2007) The discovery of a presumed dead police officer's badge brings the LAPD and Don's team together to solve the mystery of what happened 17 years ago. Elsewhere, Alan is served in a lawsuit, ... See full summary »
Numb3rs - S03E16 - Contenders(Aired: 8 November 2007) One of David's childhood friends is accused of murder while sparring in preparation for an All-Out Fighting bout, and Charlie has a contest of his own trying to defend Larry's chair in a Texas Hold 'em qualifier.
Numb3rs - S03E17 - One Hour(Aired: 3 February 2008) The son of a multi-millionaire Latino hip-hop-Song producer is kidnapped. The kidnapper demands $3.2 million for the boy's release, but Granger and his crew only have one hour.
Numb3rs - S03E18 - Democracy(Aired: 10 February 2008) An old colleague of Charlie's asks for help because of the untimely deaths of some coworkers, but when she also turns up dead Don and Charlie are started on a trail that may threaten the very democracy they've vowed to protect.
Numb3rs - S03E20 - Burn Rate(Aired: 24 February 2008) As letter bombs begin targeting people surrounding a previous serial bomber investigation, Don and Charlie must sift through a number of false leads to find the real killer.
Numb3rs - S03E22 - Under Pressure(Aired: 9 March 2008) The threat of a terrorist attack in L.A. puts everyone on high-alert as Don leads a special task force, and butts heads with Charlie and Alan.
Numb3rs - S03E23 - Money for Nothing(Aired: 16 March 2008) A shipment of medicine and cash bound for Zambia is hijacked, and Don and his team find themselves working against a banker focused on retrieving his money at the cost of the people being held for the code to access the safe.
Numb3rs - S03E24 - The Janus List(Aired: 23 March 2008) When Charlie and Don are specifically asked for by a bomber who's rigged a bridge, it puts them on a trail of espionage in- and outside the states, and a devastating betrayal.