Shortly after her eighteenth birthday, Clare Bennett disappears without a trace. Her boyfriend Ben is trying everything to find her, but there are indications that Clare might not even want to be found. In desperation, Ben turns to private detective Nea Fox, who sets off to track down Ben's girlfriend and soon realizes that she is not the only one looking for the young woman. Shortly before her disappearance, Clare was investigating mysterious symbols on London's streets and squares, but when Nea finally discovers the meaning of the blood red marks, she faces an even greater mystery. The last days of October are wrapped in fog, the nights are getting longer and the days colder. Something evil is out on the streets of the capital ...