Recovering from a shooting, LAPD witch consultant Sophie Ross leaves her job and travels to the UK to search for answers about her childhood. When she encounters a Daoine Sidhe knight of the Dark Court, she becomes entangled in an ancient hatred between two arcane forces.

For a librarian with a focus on rare magic books, Olivia's new job is a dream come true. She has been hired as part of a team to help manage the safe transportation of the collection of books owned by the Vampyre sorceress Carling Severan. The fact that the library is located on a mysterious island in an Other land only heightens the adventure. Head of security for the expedition, Sebastian Hale is tired of his rootless life of adventure and finds himself attracted to the calm, beautiful librarian. But he is living a personal nightmare.

Let's get one thing straight - Ivy Wilde is not a heroine. In fact she's probably the last witch in the world you'd call if you needed a magical helping hand, regardless of her actual abilities. If it were down to Ivy, she'd spend all day every day on her sofa, where she could watch TV, munch junk food, and talk to her feline familiar to her heart's content. However, when a bureaucratic disaster ends up with Ivy as the victim of a case of mistaken identity, she's yanked very unwillingly into Arcane Branch.

Nevada Baylor is faced with the most challenging case of her detective career - a suicide mission to bring in a suspect in a volatile situation. Nevada isn't sure she has the chops. Her quarry is a Prime, the highest rank of magic user, who can set anyone and anything on fire. Then she's kidnapped by Connor "Mad" Rogan - a darkly tempting billionaire with equally devastating powers.

Callypso Lillis is a siren with a very big problem, one that stretches up her arm and far into her past. For the last seven years she's been collecting a bracelet of black beads up her wrist, magical IOUs for favors she's received. Only death or repayment will fulfill the obligations. Only then will the beads disappear. Everyone knows that if you need a favor, you go to the Bargainer to make it happen. He's a man who can get you anything you want...at a price. And everyone knows that sooner or later he always collects. But for one client, he's never asked for repayment. Not until now.