A nun, a rabbi, a lesbian, and a disgraced priest survive the vampire apocalypse...
It sounds like the beginning of a joke, but it's actually the plot of this pretty good little page-turner by F. Paul Wilson.
Whereas most books about vampires taking over the world begin early in the process, this one starts after it's all over but the shouting. The vampires took over Europe, then swept into the US, destroying the power structure and rounding up the people to use as cattle. Some humans have remained free, but they live in fear. During the night, they hide from the vampires, and during the day they hide from the "cowboys" -- humans who work for the vampires. Most people scrape out survival as best they can, with little hope that things will ever change. However, a small group led by Father Joe--a priest who was thrown out of his parish in disgrace--discovers the will to fight back.
This is exactly the kind of book I like. A group of people who seem to have very little in common band together and fight for the common good. The baddies are ruthless, the good are flawed, and there are a few surprises along the way. I'll definitely be investigating the sequel to this one.