 This symbol allows ghosts, in this case the spirit Thatch, to enter Alaizabel's body, thus explaining the supernatural events surrounding Alaizabel.Despite his best attempts at keeping Thatch down and Alaizabel safe, Thatch almost escapes and a Wych-kin called Congealed Darkness, sent by the Fraternity, almost kidnaps her.Realizing the futility of hiding, Thaniel takes his friends to the safety of the Crooked Lanes.