Cursed by death (Ruby Jane #1)
Mary Martel

People would be wrong. She’d just traded one monster in for another, an even bigger one.
Now, as an adult, and after the murder of the only family she had left, Ruby finds herself all alone in the world and seeking answers. Answers she has to venture into the underground to find.
Not a safe place for an innocent girl because the underground isn’t just full of criminals. It’s a place of darkness for the real life monsters that most people think are make-believe. The stuff nightmares are made of, that’s what lurks in the underground.
Ruby may be innocent but she’s anything but average. More familiar with monsters than most, she goes looking for answers and a murderer.
And she gets far more than she bargained for.