Sasan raised an eyebrow, and he could totally see your deflection there, Jack Harkness. But he let it slide because: a) Jack was looking fairly serious and he knew better than to ask for details then, and b) He sure appreciated the way that question was phrased. Maybe Campbell ended up melting into a puddle or something. Sasan didn't generally understand how these super-power things were supposed to work.

With a smile, he replied, "Oh, he had to go for another walk. You know, since the last one got interrupted. He usually starts at the top and works his way down, so he's probably up there somewhere. Why? Do you need him?"