The Master allowed himself another grin while Daniel wasn't looking, dropping it as soon as the other man opened his eyes again.

"Other than your... collapse?" he raised his brows, appearing for all the world as if he was honestly trying not to offend. "I'm afraid not. I did try to get help, but," and the Master leaned forward conspiratorially, "You know how the TARDIS was behaving. It was impossible to find my way back."