Kirk's face visibly lit up when he heard Spock's voice, as much due to relief that his crewmen had arrived safely as it was to having a distraction from Bones' questions. Admittedly, more the latter. Barring any other unpleasant surprises from their jailers, he'd trusted that Spock and Chekov would find their way without trouble, but McCoy could be as stubborn as he was. Kirk held no illusions that his friend would let the matter go for anything less than a viral epidemic, and even he'd probably resume the interrogation the moment he devised a cure.

"Bones!" Kirk protested. He schooled his features into a surprisingly good attempt at authoritative disapproval, considering it was an expression he'd used only on his combat students, and rarely at that. This lasted all of two seconds before curiosity got the better of him, and Kirk moved to stand behind McCoy, rising on his tiptoes look outside. "I'm fine. Come in, you two."