Cause and Effect (Numbers)

"**Cause and Effect**"
"Cause and Effect"
Numbers episode
Episode no.	Season 6; Episode 16
Directed by	Nicolas Falacci
Written by	Cheryl Heuton, Nicolas Falacci
Original air date	March 12, 2010
Guest appearances
	Mark Ankeny as Jim Newell; David Burke as Jim Mazzolla; John Cariani as Otto Bahnoff; Stan Egi as Ralph Morris; Stephanie Erb as Linda Samuelson; Dan Martin as Det. Jack Cates; Gino Montesinos as James Shane; Michelle Nolden as Assistant United States Attorney Robin Brooks; Lou Diamond Phillips as FBI Special Agent Ian Edgerton; Luke Rosen as Ted Dacosta; Vyto Ruginis as Mike Hiller; Alicia Wollerton as Becky Mazzolla; Matthew Yang King as Matt Li; Bridger Zadina as Jim Mazzolla, Jr.;
Episode chronology
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"Cause and Effect" is the series finale of the American crime drama television series Numbers. It is the sixteenth episode of the sixth season, and the 118th episode overall. In the episode, Federal Bureau of Investigation (FBI) agents and mathematicians attempt to find one agent's gun before it is used in a violent crime. When series creators/executive producers Cheryl Heuton and Nicolas Falacci learned that the number of episodes airing during the season was reduced, they felt that they needed to finish storylines in case the series was cancelled. To do so, they wrote an open-ended story to serve as either a season finale or a series finale.

Originally set to air in May, and February, "Cause and Effect" first aired in the United States on March 12, 2010. Critics mostly focused on the potential cancellation of the series, but two reviewers gave the episode reviews. "Cause and Effect" became the Numb3rs series finale after CBS's cancellation of the series on May 18, 2010.