Probe
ProbeGene DeWeese, Margaret Wander BonannoStar Trek: The Original Series, book 16
Characters in Probe
4 characters, main characters first.Main characters
James T. Kirk
Also in Captain's Peril, Star Trek, Star Trek Adventures - Trek to Madworld, Star Trek - Mirror Universe - Spectre, Star Trek - The Eugenics Wars - The Rise and Fall of Khan Noonien Singh, Star Trek - The Prometheus Design, Killing Time, Star Trek Myriad Universes - Echoes and Refractions, Star Trek - Time for Yesterday, Avenger
Mr. Spock
Also in Harlan Ellison's The city on the edge of forever (teleplay), Star Trek, Star Trek Adventures - Trek to Madworld, Star Trek: Strange New Worlds: The High Country, Star Trek - The Eugenics Wars - The Rise and Fall of Khan Noonien Singh, Star Trek - The Prometheus Design, Star Trek - Vulcan's Soul - Exodus, I Am Spock, Imzadi, Killing Time