Star Trek: Early Voyages #5: Cloak & Dagger Part 1 of 2

Captain Christopher Pike and his away team land take a shuttle craft down to a desert like planet in search for missing crewmen of the U.S.S. Cortez.  When the get to the surface they find two groups of ancient Vulcans who's ancestors have turned their backs on logical teaching 2,000 years ago.  This is trouble for the crew and not everyone will come home after the battle.