List of Numb3rs episodes (season 4)

Numb3rs Season 4

DVD box
Country of origin United States
No. of episodes 18
Broadcast
Original channel CBS
Original run September 28, 2007 (2007-09-28) – May 16, 2008 (2008-05-16)
Home video release
DVD release date September 30, 2008 (2008-09-30)
Season chronology
← Previous
Season 3		 Next →
Season 5

Season four of Numb3rs, an American television series, first aired on September 28, 2007 and ended on May 16, 2008. Because of the Writers Guild of America strike, only 12 episodes were initially produced for this season. Following the end of the strike, six more were announced.

Episodes

See also: List of Numb3rs episodes
№ # Title Directed by Written by U.S. viewers
(million)		 Original air date Production
code
62 1 "Trust Metric" Tony Scott Ken Sanzel 9.38[1] September 28, 2007 (2007-09-28) 401

Having been captured as a Chinese spy, Colby escapes and is then interrogated on a boat traveling back to China. His friends have doubts but agree to a daring rescue.

Mathematics used: Trust metric, set covering deployment, heuristics and Illumination problem 
63 2 "Hollywood Homicide" Alexander Zakrzewski Andy Dettmann 9.76[2] October 5, 2007 (2007-10-05) 402

A girl turns up dead in a star's bathtub, leading the FBI team to uncover blackmail and murder.

Mathematics used: Snell's law, Archimedes' principle and game theory 
64 3 "Velocity" Fred Keller Nicolas Falacci & Cheryl Heuton 9.16[3] October 12, 2007 (2007-10-12) 403

When a street race leads to a bad accident in which a man is killed, the FBI find links to a cold case.

Mathematics used: Angular momentum, centripetal force, conservation laws and Newton's laws of motion 
65 4 "Thirteen" Ralph Hemecker Don McGill 9.85[4] October 19, 2007 (2007-10-19) 404

The team is on the trail of a serial killer who tortures his victims the way the 12 apostles died. A Cal Sci Religious Studies professor is brought in to explain the history and the numerology, which Charlie refuses to accept.

Mathematics used: Fibonacci coding. See also: Numerology and Hebrew numerology 
66 5 "Robin Hood" J. Miller Tobin Robert Port 9.70[5] October 26, 2007 (2007-10-26) 405

A private bank with several suspicious customers is broken into. David and Colby get their "groove" back. Charlie and Amita discuss her father's reaction to her dating a non-Indian.

Mathematics used: Listing's law, projectile motion and dating system 
67 6 "In Security" Stephen Gyllenhaal Sean Crouch 9.34[6] November 2, 2007 (2007-11-02) 406

A woman in witness protection is killed after going to dinner with Don. The lead suspect is also in witness protection. Charlie's book is released.

Mathematics used: CART Analysis, Regression Analysis and Path Analysis 
68 7 "Primacy" Chris Hartwill Julie Hébert 9.94[7] November 9, 2007 (2007-11-09) 407

A man is killed while playing an alternate reality game. Amita, a long time player of the MMORPG side of the game gets put in danger when the killer sees her as his only opponent. Charlie does a TV interview about his book. Charlie asks Amita to move in with him.

Mathematics used: Evolutionary algorithm 
69 8 "Tabu" Alex Zakrzewski Sekou Hamilton 10.26[8] November 16, 2007 (2007-11-16) 408

A big businessman's daughter is kidnapped, but the whole game changes when he refuses to play along with the kidnappers. Megan deals with her issues with her father again.

Mathematics used: Tabu search, minimax and Bayesian priors 
70 9 "Graphic" John Behring Nicolas Falacci & Cheryl Heuton 10.12[9] November 23, 2007 (2007-11-23) 409

A comic-book convention becomes a crime scene when a deadly robbery leads to the disappearance of an extremely rare comic book.

Mathematics used: Fractal Dimension Analysis, auction Theory and "Wrinkliness" (Detection of Handwriting Forgery) 
71 10 "Chinese Box" Dennis Smith Ken Sanzel 9.75[10] December 14, 2007 (2007-12-14) 410

A paranoid gunman shoots an FBI agent at the FBI headquarters, then shuts himself and David in an elevator. Liz is leaving for a few weeks on a narcotics job.

Mathematics used: Chinese room, "Chomp" and cluster analysis 
72 11 "Breaking Point" Craig Ross, Jr. Andrew Dettman 9.81[11] January 11, 2008 (2008-01-11) 411

An investigative reporter goes missing, and an attempt is made to kill Charlie after he tries to help the FBI.

Mathematics used: Regression Analysis 
73 12 "Power" Julie Hébert Julie Hébert 10.08[12] January 18, 2008 (2008-01-18) 412

Don and the team track down an officer who has turned into a serial rapist.

Mathematics used: Network theory and set theory 
74 13 "Black Swan" John Behring Ken Sanzel 10.00[13] April 4, 2008 (2008-04-04) 413

The team takes down an inner-city meth lab, and while on the bust they also arrest a bystander who is discovered to have guns and other suspicious items in the back of his van.

Mathematics used: Floyd-Warshall algorithm, Dirichlet tessellation, brute force and time series. See also: Black swan theory. 
75 14 "Checkmate" Stephen Gyllenhaal Robert Port 9.54[14] April 11, 2008 (2008-04-11) 414

Don's old flame returns to California to prosecute an incarcerated criminal kingpin who seems to be ordering assassinations from within the prison. Don and team find themselves in a race against time to convince a teenage chess genius who may be the clue into finding how the orders are being sent.

Mathematics used: supervised multiclass labeling, paper folding, diamond cut, chess and algebraic chess notation 
76 15 "End Game" Dennis Smith Don McGill 9.64[15] April 25, 2008 (2008-04-25) 415

Don and his team hunt for an ex-Marine (Sharif Atkins) wanted for murder, while the ex-Marine's family is kidnapped.

Mathematics used: OODA Loop and decision theory 
77 16 "Atomic No. 33" Leslie Libman Sean Crouch 10.33[16] May 2, 2008 (2008-05-02) 416

A cult is poisoned with arsenic, but refuses medical help. Their new leader is trying to change that and other things about his church. When they find that the old leader was also poisoned with Arsenic, the mystery gets deeper.

Mathematics used: Bayesian network analysis, Non-Newtonian fluid, social network analysis, affinity analysis and K-optimal pattern discovery 
78 17 "Pay to Play" Alex Zakrzewski Steve Cohen & Andrew Dettman 9.33[17] May 9, 2008 (2008-05-09) 417

A rapper is killed after a celebration thrown by the record label. Megan is taking some time off and Charlie finally meets Amita's parents.

Mathematics used: String metric and Gröbner basis 
79 18 "When Worlds Collide" John Behring Nicolas Falacci & Cheryl Heuton 9.78[18] May 16, 2008 (2008-05-16) 418

Charlie and the FBI have their differences about a Pakistani charity group suspected of funding terrorism.

Mathematics used: Byzantine fault tolerance, Figure-Ground, Wallpaper group, M. C. Escher, Hyperbolic geometry and Six degrees of separation 

References

  1. ^ "Weekly Program Rankings". ABC Medianet. October 2, 2007. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=100207_05. Retrieved February 10, 2010. 
  2. ^ "Weekly Program Rankings". ABC Medianet. October 9, 2007. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=100907_06. Retrieved February 10, 2010. 
  3. ^ "Weekly Program Rankings". ABC Medianet. October 16, 2007. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=101607_06. Retrieved February 10, 2010. 
  4. ^ "Weekly Program Rankings". ABC Medianet. October 23, 2007. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=102307_08. Retrieved February 10, 2010. 
  5. ^ "Weekly Program Rankings". ABC Medianet. October 30, 2007. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=103007_06. Retrieved February 10, 2010. 
  6. ^ "CBS Places First in Viewers and Adults 25–54; Strong Second in Adults 18–49". The Futon Critic. November 6, 2007. http://www.thefutoncritic.com/news.aspx?id=20071106cbs02. Retrieved February 10, 2010. 
  7. ^ "Weekly Program Rankings". ABC Medianet. November 13, 2007. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=111307_06. Retrieved February 10, 2010. 
  8. ^ "Weekly Program Rankings". ABC Medianet. November 20, 2007. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=112007_06. Retrieved February 10, 2010. 
  9. ^ "Weekly Program Rankings". ABC Medianet. November 27, 2007. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=112707_03. Retrieved February 10, 2010. 
  10. ^ "First-Run Programming Carries CBS to its Most Dominating Week of the Season". The Futon Critic. December 18, 2007. http://www.thefutoncritic.com/news.aspx?id=20071218cbs01. Retrieved February 10, 2010. 
  11. ^ "Weekly Program Rankings". ABC Medianet. January 15, 2008. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=011508_03. Retrieved February 10, 2010. 
  12. ^ "Weekly Program Rankings". ABC Medianet. January 23, 2008. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=012308_04. Retrieved February 10, 2010. 
  13. ^ "Weekly Program Rankings". ABC Medianet. April 8, 2008. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=040808_06. Retrieved February 10, 2010. 
  14. ^ "Weekly Program Rankings". ABC Medianet. April 15, 2008. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=041508_09. Retrieved February 10, 2010. 
  15. ^ "Weekly Program Rankings". ABC Medianet. April 29, 2008. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=042908_06. Retrieved February 10, 2010. 
  16. ^ "Weekly Program Rankings". ABC Medianet. May 6, 2008. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=050608_02. Retrieved February 10, 2010. 
  17. ^ "Weekly Program Rankings". ABC Medianet. May 13, 2008. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=051308_06. Retrieved February 10, 2010. 
  18. ^ "Weekly Program Rankings". ABC Medianet. May 20, 2008. http://abcmedianet.com/web/dnr/dispDNR.aspx?id=052008_05. Retrieved February 10, 2010. 

External links

Characters
Episode list
Season 1 · Season 2 · Season 3 · Season 4 · Season 5 · Season 6
Notable episodes