The Guardians of the Night Books in Order

Private investigator Carolyn Mathers's missing fiancé returns after two years, transformed into a vampire and accused of murder. Determined to help Gray, she enters a hidden conflict between predatory vampires and the Guardians who protect humans.

Vampire Jules Gerard discovers that the man who transformed him is alive in Baltimore. Human investigator Hannah Moore follows him to help confront the past, while Jules struggles between seeking vengeance and preserving his refusal to kill.

Vampire Gabriel plans revenge against his father, but his growing attachment to fledgling Jezebel complicates his anger. When an old enemy targets her, protecting Jezebel may require cooperation with the very parent Gabriel wants to destroy.

With Baltimore's Guardian leader missing, vampire Drake must protect inexperienced recruits from visiting European Killers. Faith seeks his help rescuing her sister, but confronting his violent past and a series of suspicious deaths threatens Drake's remaining conscience.