A subway slasher that kills with claws and leaves the victims looking as if they were mauled by a bear is on the prowl. When Catherine finds out about the case she starts to suspect Vincent, as she remembers how he rescued her from the attackers in the safe house.

Halloween night Vincent goes above to meet an Irish writer named Brigit O' Donnell. Halloween is the only night that Vincent is safe above. Catherine is at the same party. Eventually, they wind up spending the evening together as Catherine shows Vincent her world.