Lila Black returns in the fourth volume of high-octane, high-magic, high-tech adventures.

Ever since the Quantum Bomb of 2015 things have been different; the dimensions have fused and suddenly our world is accessible to elves, demons, ghosts, and elementals-and their worlds are open to us. Things have been different for Special Agent Lila Black too: She's been tortured and magic-scarred by elves; rebuilt by humans into a half-robot, part-AI, nuclear-fueled walking arsenal; married to a demon; and is in love with a recently-deceased elf. It was confusing enough before she was catapulted fifty years into her own future.

Returning to the life of a secret agent, Lila finds herself left all of her former boss's old offices and whatever mysteries they contain, as the elf has disappeared some fifty years previously. Appointed head of the new android division, she can see all too clearly what's in store for her if the growth of the alien technologies in her cyborg body continues unchecked.

But there are more immediate concerns. Like resurrecting her lover, Zal. And her husband, the demon Teazle, is embroiled in a fatal plot in Demonia, and her magic sword is making itself happy as a pen whose writing has the power to affect other worlds. The world is off its rocker and most everyone is terrified of faeries. And all the while, she hears the voices of the machine-material projections of an immaterial form, The Signal. The Signal talks constantly-if only she knew what it meant.