Connor Mousman's murder leaves his adopted daughter Cassy with no choice. She must trick Zach Nielson, a seemingly ordinary accountant, into becoming her partner.

With his help she might finally be able to discover what they both are. They are not human but Connor Mousman always said Zach was like her. Perhaps he meant that Zach was exactly like her.

The lies and manipulation she used to recruit Zach weigh heavily on Cassy as she struggles to find her father's killer. She knows she needs to tell him the truth but the truth might chase away the only person like her in the entire world.