Remember that old line about how the only way out of the organization is in a pine box? Well, Rue Hollis spent 10 years thinking she had escaped the Black Hat Bureau, no coffin required. Then her former partner had to go and shatter the illusion by showing up on her doorstep with grim tidings.

Kit McCafferty's life is quiet, unremarkable, and filled with cat hair. In the magical city of Coldstream, located on the border between Scotland and England, Kit is viewed as little more than mildly eccentric and mostly harmless. She passes her days caring for her family of five cats, feeding the local feral moggies, and maintaining relatively good relations with her neighbors. All that changes, however, when a teenage werewolf shows up at her door in the desperate hope of renting out a nearby vacant flat.

Nevada Baylor runs a small-time detective agency in Houston, Texas, busting scammers, exposing cheaters, and dealing with petty criminals. She's very good at her job–helped by a magical ability to sense when someone tells the truth or lies. But when she's forced into accepting a case to find a radical pyrotechnic who can conjure heat and fire at will, Nevada knows she's out of her league. To bring him to justice, she'll have to join forces with someone who wields an even more dangerous power.

Daisy Carter knows she's not anyone special. She might be brave and resourceful. She might possess a touch more magic than your average low elf. But, when it comes down to it, she's just another delivery driver trying to make a living. Admittedly, life would be easier without her addiction to a dangerous drug called spider's silk—but she's got her reasons for that. Nobody's perfect. However, Daisy's world changes when she crosses paths with Hugo Pemberville, the celebrated high elf who's well known for being an accomplished treasure hunter.

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.