Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
X-files unit
open-in-new
<p>In the fictional universe of the television series <i><a href="/facts/The_X-Files/J6SpBK3H">The X-Files</a></i>, an "X-File" is a case that has been deemed unsolvable or given minimal-priority status by the <a href="/facts/Federal_Bureau_of_Investigation/UY93jwX6">Federal Bureau of Investigation</a>. These files are transferred to the X-Files unit. The files constitute an unassigned project (outside the Bureau mainstream) that is more or less concerned with unexplained phenomena, fringe pseudo-scientific theories, and non-credible evidence of paranormal activity. </p>