"American president during the Cuban missile crisis," Sylvie answers. "At least in one timeline. I never spent much time in Dallas in the sixties, though, I was too obviously out of place."

The TVA had always found her in places like that, where her very appearance would cause a divergence in the timeline. Once she had learned to use apocalyptic scenarios, though, they'd lost her completely.

"I didn't work for anyone," she says. "My mission was one of vengeance."

She says it without the slightest hint of irony. If it sounds dramatic, then it's only fitting, given who she really is.