Rihannsu (novels)

Rihannsu is a Star Trek: The Original Series mini-series by Diane Duane and Peter Morwood.

The novels in this series are:


 * Book 1: My Enemy, My Ally (TOS #18)
 * Book 2: The Romulan Way (TOS #35)
 * Book 3: Swordhunt (TOS #95)
 * Book 4: Honor Blade (TOS #96)