From CBS -

NUMB3RS is a drama about an FBI agent who recruits his mathematical-genius brother to help the Bureau solve a wide range of challenging crimes in Los Angeles. The two brothers take on the most confounding criminal cases from a very distinctive perspective. Inspired by actual events, the series depicts how the confluence of police work and mathematics provides unexpected revelations and answers to the most perplexing criminal questions. A dedicated FBI agent, Don Eppes, couldn't be more different from his younger brother, Charlie Eppes, a brilliant mathematician who, since he was little, yearned to impress his big brother. Don is joined on his team by fellow agents David Sinclair, who utilizes his incredible perspective and the survival skills he learned growing up in the Bronx; Colby Granger, an Army veteran once stationed in the Middle East, who brings with him innovative methods to crime-solving; Liz Warner, a special agent who is also a former romantic interest of Don's; and newest agent Nikki Betancourt, a tough, street-smart ex-LAPD officer whose way of handling cases won't exactly mesh with how Don runs his team. Don and Charlie's father, Alan, is happy to see his sons working together even though he doesn't understand the intricacies of what Charlie does for a living. It is his co-workers at CalSci who further refine Charlie's approach and help him stay focused. Physicist friend Dr. Larry Fleinhardt constantly challenges Charlie to employ a broader point of view to his work with the FBI, and Amita Ramanjuan, Charlie's girlfriend and former grad student, frequently helps him see cases in a new light. Despite their disparate approaches to life, Don and Charlie are able to combine their areas of expertise and solve some killer cases.

The FBI work to track down sniper before he can assassinate an activist named Ben Polk. Meanwhile, the team notices something strange going on between Amita and Charlie.

The FBI seek justice for two agents who were shot during a bank robbery, but learn that the killer is closer than they thought.

Dead bodies pile up as gamblers down on their luck participate in a high stakes tournament of Russian Roulette. Meanwhile, Larry questions where he wants to be.

A dead body found in the desert closely follows the script of a movie that has not been released. Alan feels his generation is being left behind, while Larry sets off on his journey.

The FBI searches for a woman who abducted a child who might be a clone.

The team investigates a woman who was killed at a base known to conduct experimental weapon tests.

The team protects a hacker who has messed with the wrong person. Meanwhile, Alan introduces the gang to his new flirtatious boss.

Ian takes Colby hostage after the police suspect him of murdering a man. Ian demands to speak to Charlie to ask for help in looking for a disguised inmate.