Whoever was on the other end of this particular call was not having a good morning. The IF and another male had left the IF’s building, walked to the Canal Street subway, entered, and vanished. Milgrim knew, from having also overheard Brown’s half of other conversations, that the IF and his family tended to do that, and particularly around subways. Milgrim imagined that the IF and his family had the keys to some special kind of subway-based porosity, a way into the cracks and holes and spaces between things.