The Star Trek universe may not have much in common with the world of Criminal Minds, but several Trek stars appeared in the dark crime drama. With its focus on exploration and its optimistic version of the future, Star Trek celebrates the best of humanity. Criminal Minds, on the other hand, explores the depths of human depravity, but still has moments of light as the heroes fight to put the bad guys behind bars. The familiar Star Trek faces on Criminal Minds display their range as actors, often playing characters very different (and significantly more homicidal) from their Trek characters.

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