Vulcan (Bantam Book; 12137-5)

Spock: beamed down to a murderous planet in a dangerously shifting universe A universe where a series of freak ion storms has changed the boundaries of space... where Arachne IV, inhabited by a strange race, may be lost forever to the Federation where Spock is sent on a death-defying assignment into a war of ant-types along with a brilliant, beautiful, bigoted scientist who hates Vulcans! Captain Kirk, Mr. Spock and the crew of the starship Enterprise daringly journey on another thrilling mission toward the perils of unknown worlds.