Dead Lies Dreaming

When magic and superpowers emerge in the masses, Wendy Deere is contracted by the government to bag and snag supervillains.
As Wendy hunts down Imp-the cyberpunk head of a band calling themselves "The Lost Boys"- she is dragged into the schemes of louche billionaire Rupert de Montfort Bigge. Rupert has discovered that the sole surviving copy of the long-lost concordance to the one true Necronomicon is up for underground auction in London. He hires Imp's sister, Eve, to procure it by any means necessary, and in the process, he encounters Wendy Deere.
In a tale of corruption, assassination, thievery, and magic, Wendy Deere must navigate rotting mansions that lead to distant pasts, evil tycoons, corrupt government officials, lethal curses, and her own moral qualms in order to make it out of this chase alive.