"Immortals After Dark" is a paranormal romance series by Kresley Cole that follows the lives of various supernatural beings, including vampires, werewolves, and fey. The series is set in a world where these creatures coexist with humans, often leading to conflicts and romantic entanglements. Each book typically focuses on a different couple, exploring their unique challenges and the overarching battle between factions. The series is known for its blend of action, humor, and steamy romance, appealing to fans of both fantasy and romance genres. With a rich mythology and interconnected storylines, "Immortals After Dark" has garnered a dedicated readership and has expanded into multiple installments, each adding depth to the universe and its characters.