How could someone act so similarly to someone else?

Someone he was sure they'd never met?

Or had they?

Was that the connection between the nanny and his child?

That maybe they were sisters? Could it be why the little girl wanted Isabella to be her nanny at all costs?

Was that it?

“No.” Booker shook his head frantically. “Can't be. She'd never told me of any sister; it can't be.”

“Excuse me?” Isabella said, startled by his words. Booker snapped out of his thought when he ...