Bo goes in search of the train so she can finally find out the truth about the Wanderer. She goes to hell through a graveyard to get there. When she gets to the train, she comes face-to-face with the Wanderer. She finds out that she chose to be dark, so she would search for the Wanderer in order to free him.
The Wanderer is Rainer. He was erased from history by the Blood King. He's not Bo's father, instead he's her destiny.
While Bo was on her search, Dyson and Lauren work together to try and keep her safe. After protecting her, Bo leaves them behind to find Rainer.
Kenzi and Tamsin search for the truth, while Trick does the same on his own. Trick has the memory retrieved from his mind of what he did to Rainer. Tamsin recovers the same memory from Trick's Blood Book.