The material is a mixture of video clips, interviews, recovered diary entries, Post-it Notes, and other similar items, and will also occasionally have notations about missing content.

They are aware of each other's existence, but they never directly interact as Carly is only active during the day and Kaitlyn at night, although they do communicate through various means, which they attempt to hide from others.

Her peace is short-lived as Kaitlyn begins to see visions of a menacing dead girl and becomes stressed when she cannot see her little sister Jaimie, who was placed into foster care.

Things come to a head when Carly stops emerging, provoking Kaitlyn into attempting suicide, which sends her back to the mental institution.

Naida asks Kaitlyn to break herself out of the hospital, fearing that a Shyan, a dark magic user, is after Kaitlyn/Carly because of the power held by dual souls.

As Kaitlyn hides she continues to experience more terrifying supernatural phenomena, prompting her and Naida to travel to London to see her brother Haji, a powerful dark magician that gives them some information about their situation.

Naida believes that Kaitlyn has been possessed by an evil spirit and ultimately decides to hold a ritual to travel into her mind, into the dead house itself.

She had suspected Brett after reading a diary entry where he tried to force himself on Carly, but when his dead body is found her suspicions turn to John.

The book then cuts to an undated diary entry where it's revealed that John was not the Shyan - rather it was Ari, who did everything because he believed that Carly and the others were holding Kaitlyn back from her true life.

Publishers Weekly wrote that "Contrived tension and a haphazard time line ring a few discordant notes, but are balanced by insightful characterization and a detailed exploration of the importance of the emergent identity to the teenage self.