Jack's expression morphs in an instant--gone is the smile, gone is the charm. There's no threat in his demeanor, but there is visible tension in his suddenly gravely serious expression.

"More than you can possibly realize." he replies honestly. "I'll skip the part where you shouldn't know that word, and cut right to the fact that, as I understand it, people who aren't native to this place have to die to get here."

God, no. Please, no, not him, anyone but him...

"Who told you about Torchwood, Mr. Palmer?"