The first season of Numbers, an American television series, premiered on January 23, 2005 and finished on May 13, 2005. The first season sees the start of the working relationship between Don Eppes, an FBI agent, and his genius brother Charlie, an applied mathematician and professor at a local university. The rest of Don's FBI team consists of Terry Lake and David Sinclair. Don and Charlie's father, Alan Eppes, provides emotional support for the pair, while the brilliant Professor Larry Fleinhardt and promising doctoral student Amita Ramanujan provide mathematical support and insights to Charlie.
Charlie assists Don on a serial rapist case by calculating a "hot zone", an area where the rapist is most likely to live. Don is removed from the case after Charlie's formula fails to turn up any leads but later a comment from their father then leads Charlie to change the equation to calculate two points of origin, instead of one.
Charlie successfully predicts the time and place of a bank robbery using what he says are elements of Heisenberg'suncertainty principle, but when the planned arrest goes bad, he retreats into the math problem P vs. NP.
A deadly strain of influenza is spreading through Los Angeles, killing many people. Don investigates whether the strain was released deliberately, and Charlie tries to calculate the origin and likely spread of the virus. Guest stars include CCH Pounder, J.K. Simmons, andRainn Wilson.
An engineering student dies by suicide, but Charlie suspects foul play. Don disagrees, but he agrees to help Charlie investigate whether the student was murdered because of his research into a building's structural integrity.
A young girl is kidnapped, but her parents refuse to cooperate with Don's investigation. The girl's father (Neil Patrick Harris) is a innovative mathematician, and the kidnapping may be related to his work on the Riemann hypothesis.
A strange series of robberies leads Don into a case involving counterfeit money, kidnapping and murder. Don is assisted by Secret Service agent Kim Hall (Sarah Wayne Callies) while Charlie uses math to analyze fake bank notes and track their spread.
A new case with disturbing similarities to an old case leads Don to question whether he put the right man in jail. While Don tries to find the connection between the two cases, he asks Charlie to look for mistakes or flaws in the first case.
Don is investigating a series of sniper killings, and Charlie is searching for an underlying pattern to the attacks. What appears to be bad data can't be eliminated from the analysis, because it fits the only pattern he can find. Lou Diamond Phillips guest stars as FBI sniper Agent Ian Edgerton.
A truck carrying radioactive waste disappears, and Don figures that a dirty bomb will be set off in downtown Los Angeles. When three suspects are caught but refuse to turn on each other, Charlie must try to convince one of them to give up the others and also the location of the waste.
An unidentified flying object travels over Los Angeles and then disappears. Don suspects terrorist activity, and Charlie tries to find out more about the object and its flight path. Guest stars include Gloria Reuben, Bill Smitrovich, and Ethan Embry.
A prison bus crashes, allowing two dangerous convicts to escape. Don is joined by his former Fugitive Recovery partner Billy Cooper (Max Martini) as the Bureau launches an effort to recapture them. Guest stars include Christina Cox and Jennifer Westfeldt.