The IDIC Epidemic

The IDIC Epidemic is a Star Trek: The Original Series novel by Jean Lorrah.[1] The novel provides an explanation of why the Klingons seen in the original series have a very different appearance from the "Imperial" Klingons with huge forehead ridges seen later.

The IDIC Epidemic
The IDIC Epidemic.jpg
AuthorJean Lorrah
CountryUnited States
SeriesStar Trek: The Original Series
GenreScience fiction
PublisherPocket Books
Publication date
February 1988
Media typePrint (paperback)
Pages278 pp
ISBN0-671-70768-X (first edition, paperback)
Preceded byBloodthirst 
Followed byTime for Yesterday 


I.D.I.C. – Infinite Diversity in Infinite Combination. This is a philosophical cornerstone of the Vulcan society. Currently, a mysterious plague has hit the planet, a plague somehow tied into I.D.I.C and the fact hundreds of races also currently make their home on Vulcan as well. Unfortunately Vulcan is also a central part of Starfleet and the Federation as well, so if it falls, war might follow.


The book features Daniel and T'Mir, a human/Vulcan couple from the author's previous novel, The Vulcan Academy Murders.


  1. ^ "PAPERBACK BEST SELLERS: FEBRUARY 21, 1988". New York Times. Feb 21, 1988. Retrieved 9 October 2014.

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