"Dead Witch Walking" is the first book in the The Hollows series by Kim Harrison. It follows the story of Rachel Morgan, a witch and bounty hunter living in a world where supernatural beings coexist with humans. Rachel decides to leave her job at the Inderland Security to pursue her own adventures, but her decision leads to unexpected challenges and dangers. As Rachel navigates her new life, she teams up with a vampire named Ivy and a pixy named Jenks. Together, they face various threats, including a powerful demon and the complexities of their own relationships. The book blends elements of fantasy, mystery, and humor, making it an engaging read.