This series is ok. Not my favorite. Here's the reading order of this series and the spin-offs:Halfway to the GraveOne Foot in the GraveAt Grave's EndDestined for an Early GraveFirst Drop of Crimson (Night Huntress World)Eternal Kiss of Darkness (Night Huntress World)This Side of the GraveOne Grave at a TimeOnce Burned (Night Prince)Twice Tempted (Night Prince)