Detective Sergeant Maximillian “Max” De Barra has always preferred working the night shift in the homicide unit, more at home in the shadows with his own company than saddled with a partner. His single-minded focus to solve crimes has earned him a reputation so when he is called in to solve a string of murders whose only link is the stamp of a nightclub downtown, Max must use that determination to get passed a veil of secrecy.
Theodora or Theo to her Scion, has managed to stay under the radar of humans for most of her immortal life. As the Suzerain, it's her responsibility to keep her vampires safe while also making sure that none of her kin do anything stupid that would draw the attention of the humans. When human attendees of her club end up dead, with vampire bite marks, Theo must do everything in her power to stop the lead detective from discovering that monsters really do come out at night.
Bodies keep dropping and Max and Theo find themselves in a cat-and-mouse game with a killer who has only just gotten started. Fighting the spark of attraction might be more dangerous than the killer that they hunt and it might just be the death of them.