Season 2

The second season of Numb3rs, an American television series premiered on CBS on September 23, 2005 and concluded on May 19, 2006, with the consists of 24 episodes.

Summary
The several changes to Don's FBI team: Terry Lake is reassigned to Washington DC and two new members join Don and David Sinclair: Megan Reeves and Colby Granger. Charlie is challenged on one of his long-standing pieces of mathematical work and also starts work on a new theory, Cognitive Emergence Theory. Larry sells his home and lives a nomadic lifestyle, while he becomes romantically involved with Megan. Amita receives an offer for an assistant professor position at Harvard University, but is plagued by doubt as her relationship with Charlie is challenged and her career is in upheaval. Alan begins working and dating again, though he struggles with the loss of his wife.

Main Cast

 * Rob Morrow as Don Eppes
 * David Krumholtz as Charlie Eppes
 * Judd Hirsch as Alan Eppes
 * Alimi Ballard as David Sinclair
 * Peter MacNicol as Larry Fleinhardt
 * Diane Farr as Megan Reeves
 * Navi Rawat as Amita Ramanujan

Recurring Cast

 * Dylan Bruno as Colby Granger
 * Sarah Carter as Nadine Hodges
 * Lou Diamond Phillips as Ian Edgerton

Guest Cast

 * Alan Rosenberg as Judge Franklin Trelane
 * Jordi Vilasuso as Gabriel Ruiz
 * Christian Clemenson as Henry Korfelt
 * Elizabeth Peña as Sonya Benavides
 * Scott Cohen as James Grace
 * Christina Chang as Val Eng
 * Melinda Page Hamilton as Jennifer Nash
 * John Heard as Peter Houseman
 * Cynthia Preston as Mrs. McHugh
 * Kate Burton as Anthropologist
 * Clyde Kusatsu as Antiquities Dealer
 * Mark Damon Espinoza as Frank Lopez
 * Sophina Brown as Bianca Styles
 * Tamara Taylor as Olivia Rawlings
 * Taylor Cole as Brandi
 * Kirk Acevedo as Gino McGinty
 * Robert Forster as Agent Thomas Larson
 * Patrick J. Adams as Adam Bennett
 * Leighton Meester as Karen Camden
 * Christine Estabrook as Laura Price
 * Craig Zimmerman as Dave Taggart
 * Andrew Leeds as Daniel
 * Lauren Velez as Claudia Gomez
 * Matt Roth as Mike Belweather
 * JoBeth Williams as Margaret Eppes