The Dark-Hunter Series is a popular collection of paranormal romance novels written by author Sherrilyn Kenyon. The series revolves around a group of immortal warriors known as Dark-Hunters, who are tasked with protecting humanity from supernatural threats, including demons and other dark entities. Each book typically features a unique protagonist, often exploring themes of love, sacrifice, and redemption. Set in a richly developed universe, the series intertwines mythology, history, and fantasy elements. Characters often draw from various mythologies, including Greek and Roman, and the stories are filled with action, romance, and humor. The series has garnered a dedicated fanbase and has expanded to include spin-offs and graphic novels.