|TOS09 (15 Dec 1966)
(The root of all realities)
Starfleet Lieutenant Andrew Stiles was assigned to the U.S.S. Enterprise NCC-1701 as a navigator in 2266. Stiles was descended from a long family history of Starfleet service, dating back to the Romulan War a century earlier, where several members of his family served in the Earth Starfleet. During an encounter with a Romulan Bird of Prey, the Enterprise crew discovers for the first time that the Romulans are related to the Vulcans. This sparks a bitter resentment and outright bigotry from Stiles toward the ship's Vulcan first officer, Commander Spock. It was not until Spock saved Stiles' life at great personal risk that he finally was able to let go of his hatred.