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When Worlds Collide (Numbers)

episode of Numbers (S4 E18)

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 17, 2026
Entity authorityQ7992829
Source-derived summary

"When Worlds Collide" is the 18th episode and the season finale of the fourth season of the American television show Numbers. In the episode, two brothers, one a Federal Bureau of Investigation (FBI) Special Agent and the other a mathematician, disagree with each other on the issue of academic freedom after one of the mathematician's friends is arrested on terrorism charges. Series creators Cheryl Heuton and Nicolas Falacci, who wrote the episode, first mentioned the idea for the brothers' conflict during a season two commentary. When Heuton and Falacci wrote the episode for season four, their episode launched a story arc that was later resolved during season five.

"When Worlds Collide" first aired in the United States on May 16, 2008. Critics gave the episode positive reviews. One called the episode "intense" while another called it "game-changing". In addition, this episode also marks the final appearance of Megan Reeves.

Plot summary

Two men are kidnapped . Meanwhile, in front of Drs.

Editorial summary

The public source identifies “When Worlds Collide (Numbers)” as episode of Numbers (S4 E18). This brief keeps that definition visible, then builds a research path around When, Worlds and Collide.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—2008—that can be checked directly. The linked authority record independently contributes the date 2008-05-16. Its value is orientation rather than verdict, with When, Worlds and Collide providing the first useful test.
Editorial analysis

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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jul 17, 2026. The linked authority identifier is Q7992829. None of the 1 selected statements returned an explicit reference. The first chronological checks are 2008.

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Source & attribution

This entry incorporates text from When Worlds Collide (Numbers)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.