A Curious Invasion — Marie Andreas

In an Alternative Victorian London, England has a new queen--she just happens to be undead. Dr. Nettie Jones is a new agent for The Society for the Exploration of the Unexplainable, a secret organization protecting England from unnamed sources. Being half-vampire is an added complication. The Society doesn't yet appreciate Nettie but fate steps in when invaders from a dying planet begin following her the same day Queen Victoria chooses to be turned into a vampire. Things become dangerously interwoven when Nettie discovers that a supposed accident was in fact an act of betrayal by one of the agents of the Society. The first shot in a larger conspiracy Nettie and her fellow Society agents must pull together to thwart the alien invaders, fight off the vampire infestation, and rescue the Queen from becoming the longest ruling undead monarch, even if that rescue is against her will.