This is perhaps the only bit of reassuring news she has, and while Olivia tenses, Cameron relaxes.

"It's difficult to be sure of anything," she begins slowly, hedging only because she doesn't like to claim certainty when the City's greatest constant is change. "But I've never heard of anyone finding it otherwise. My colleagues-- none of us came from the exact same moment, in our own world, and none of us have noticed others missing from reality due to our stays here."