196. The TOS Enterprise would routinely be visited by female officers of exquisite beauty, unrivalled skill and intellects at least the equal of Spock's. They would be incredibly popular with the crew, usually with at least one member of the senior staff falling hopelessly in love with them. After playing an integral part in solving the current mission, these people will usually reveal themselves as some sort of secret agent (the crew will bear no grudge upon learning of this deception) and after saying a tearful goodbye to whichever crewmember(s) fell for them, they take their leave, vowing to return one day... (Triangle, Uhura's Song, Demons, Death's Angel etc.)
197. ...but they never do. They were all hunted down and killed by Richard Arnold.