Star Trek: Rihannsu is a 4-book series with 4 primary works first released in 1984 with contributions by Diane Duane.
#18 of 82 in Star Trek: The Original Series
1984 • 8 Readers • 309 pages • 3.7
2000 • 4 Readers • 229 pages • 3.5
2000 • 3 Readers • 4
2006 • 3 Readers • 421 pages