Numb3rs: 4x18
When World's Collide
In the season finale, Don and Charlie work together on a case that ends up with them going head to head about their personal beliefs, and one team member will walk away forever.
4 - 1Trust Metric Sep. 28, 2007
4 - 2Hollywood Homicide Oct. 05, 2007
4 - 3Velocity Oct. 12, 2007
4 - 4Thirteen Oct. 19, 2007
4 - 5Robin Hood Oct. 26, 2007
4 - 6In Security Nov. 02, 2007
4 - 7Primacy Nov. 09, 2007
4 - 8Tabu Nov. 16, 2007
4 - 9Graphic Nov. 23, 2007
4 - 10Chinese Box Dec. 14, 2007
4 - 11Breaking Point Jan. 11, 2008
4 - 12Power Jan. 18, 2008
4 - 13Black Swan Apr. 04, 2008
4 - 14Checkmate Apr. 11, 2008
4 - 15End Game Apr. 25, 2008
4 - 16Atomic No. 33 May. 02, 2008
4 - 17Pay to Play May. 09, 2008
4 - 18When World's Collide May. 16, 2008