Although the casual fan might think of Klingons as the biggest bad in the Star Trek galaxy, long before they reared their bumpy heads the main adversary of the Federation was the Romulan Empire.

The Romulan Star Empire's intelligence service was first seen in TNG's "Face of the Enemy" and referenced throughout Star Trek: Deep Space Nine (see "The Die is Cast" and "Inter Arma Enim Silent ...

Star Trek's Romulan Neutral Zone defines the space between the United Federation of Planets and the Romulan Star Empire. The ...