The Naked Time
A highly communicable virus is accidentally brought aboard by a crewman and spreads rapidly through the ranks, driving the crew into unique forms of madness. This episode introduced the Nurse Chapel character, played by Majel Barrett. Barrett went on to recurring roles in spin-off series, including “Star Trek: The Next Generation,” and married series creator Gene Roddenberry. Tormolen: Stewart Moss. Riley: Bruce Hyde. Dr. Harrison: John Bellah. Spock: Leonard Nimoy. Uhura: Nichelle Nichols.