The Hollows is a fictional urban fantasy series written by Kim Harrison. Set in a world where supernatural beings coexist with humans, the story follows Rachel Morgan, a witch and bounty hunter, as she navigates the challenges of her profession while dealing with various magical creatures, including vampires and werewolves. The series is known for its rich world-building and complex characters. It explores themes of friendship, morality, and the struggle for identity in a society that often discriminates against non-human beings. The first book, Dead Witch Walking, introduces readers to Rachel's adventures and the dangers she faces in her quest for justice.