He supposed it was, really, but Brown had been waiting for this, for the IF to receive one of these messages in his room, on one of the IF’s steadily replaced cell phones, where the fancy little bug under the coatrack could also pick it up. Brown had been waiting for it since he’d acquired Milgrim. Previous messages were assumed to have been received elsewhere, when the IF was out and about, drifting as he seemed to through lower Manhattan. Milgrim had no idea how Brown knew about those previous deliveries, but he did, and it had become evident to Milgrim that what Brown wanted most of all wasn’t the IF, or whatever it might be that he was delivering, but this "usual client," a second "he" in Brown’s phone conversations, sometimes also referred to as "subject." Brown ate and slept Subject, Milgrim knew, and the IF was merely some facilitator. Once Brown had raced to Washington Square, his people converging invisibly with him, only to find Subject gone, and the IF strolling back down Broadway like a small black crow, narrow black legs moving over a broken cover of sooty snow. Milgrim had seen this from the window of a gray Ford Taurus that stank of cigars, over Brown’s tactical nylon shoulder.