"I don’t know," Hollis said. She was in Sèvres-Babylone, walking between platforms, her bag’s trick wheel ticking steadily, like a personal metronome. She had decided to give Milgrim’s worries the benefit of the doubt, taking a random course through the Métro, short hops, line changes, abrupt reversals. If anyone was following her, she hadn’t noticed them. But it was crowded now, tiring, and she’d just decided to head for Odéon, and the hotel, when Heidi called. "I think I’ve found something, but someone may have found me."