[Book] Vermilion - a ghost-hunter is hired to find a vampire (LGBT friendly?)

Vermilion is about a ghost hunter in the 1800s who is hired to investigate rumors of a vampire running a mental asylum in the Colorado rocky mountains. So it’s definitely a Weird Western and I was interested. But as the story went on, I started to notice a trend in all the characters. I’m going to give some mild spoilers in...