What I particularly like about this strand of the plot is what it doesn’t do. At no point do Spock and Zarabeth declare their undying love for each other which, after the insta-love affairs of this season (“For the World is Hollow and I Have Touched the Sky,” “The Paradise Syndrome,” “The Lights of Zetar,” “Requiem for Methuselah“) comes as something of a relief. This isn’t a love affair—this is two very lonely people finding each other and finding comfort in each other’s arms. For Spock, the loneliness is psychological, but no less real for all that. For Zarabeth, it’s much more tangible, and while McCoy may be overstating the case by saying that she’d kill as many people as possible to keep Spock around, he’s not wrong in his conclusion: Zarabeth is desperate for companionship, justifiably so.