This groundbreaking new novel from one of the genre's most respected authors is a thrilling mix of science, magic and politics.

In Harmony, only model citizens are welcome.

A perfect society must be maintained. The defective must be eradicated. For orphans like Nico and Twostar, this means a life that's brutal, regulated and short.

But Nico and Twostar are survivors, and when they're offered a way out of the slums, they take it.

Unfortunately, no one told Nico the deal included being sentenced to death for the murder of one of Harmony's most notorious gang leaders.

Or that to gain his freedom, first he must lose his mind.

Lila Black faces her greatest challange yet as she takes herself, her dead lover and the AI in her head into death's realm.

The Quantum Gravity series, set in a world where our reality mixes with other dimensions that are the homes to Faeries, elementals and demons, is unique in modern SF - a series that is willing to incorporate legend, myth and magic while maintaining a rigorous approach to scientific and pyschological reality.

And in Lila Black Justina Robson has created an enduringly strong yet quirkily human and flawed heroine.

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

For ten years now mankind has lived in Otopia - our world, but our world changed. Ever since the Quantum Bomb our dimension and realms of faerie, demonia, of the elementals and of death have been intermingled. We live alongside creatures from our myths, dreams and nightmares.

Lila Black, half-robot, all attitude works for Otopia's secret service. In love with a half-elf, half-demon, and carrying the spirit of another elf inside her, her life is quite complicated enough already. But other complications, other loves, other fears, other deaths wait just around the next dimensional corner.

This is bright, fast moving and accessible SF that mixes in fantasy and a cool cult-lit sensibility to create a series that will appeal to all fans of Laurell K. Hamilton and Peter Hamilton alike.

The Quantum Bomb of 2015 changed everything. The fabric that kept the universe's different dimensions apart was torn and now, six years later, the people of earth exist in uneasy company with the inhabitants of, amongst others, the elven, elemental and demonic realms. Magic is real and can be even more dangerous than technology. Elves are exotic, erotic, dangerous and really bored with the constant Lord of the Rings references. Elementals are a law unto themselves and demons are best left well to themselves.

Special agent Lila Black used to be pretty but now she's not so sure.

Her body is now more than half restless carbon and metal alloy machinery. A machine she's barely in control of. It goes into combat mode, enough weapons for a small army springing from within itself, at the merest provocation.

As for her heart . . . well ever since being drawn into a Game by the elven rockstar she's been assigned to protect, she's not even sure she can trust that anymore either.

Book three of the Quantum Gravity Series sees Lila Black back from her adventures in Demonia and struggling to cope with the even stranger world of Faerie.

And these Faeries couldn't be less like Tinkerbell. These Faeries are capricious, unknowable and dangerous. And they will be Lila's toughest test yet.

Lila may have reached some sort of peace over the fate of her parents, she may have built some bridges with her sister but when you're half cyborg, when you contain enough high-tech weaponry to win a small war, when you don't know your heart, still love an elf and don't trust your bosses you can be capricious unknowable and quiter dangerous enough yourself.

This is a fast moving SF fantasy full of thrills and adventures but informed with a ready wit and prepared to touch on serious themes of identity, reality and sexual politics.

Lila Black is going to Hell.

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. Special Agent Lila Black has been different too: tortured and magic-scarred by elves, re-built by humans into a half-robot, part-AI, nuclear-fuelled walking arsenal, and carrying the essence of a dead elven necromancer in her chest, sometimes she has trouble figuring out who she really is. And that's without mentioning that her boyfriend's a half-elf, half-demon international rock-star.

So a mission to Hell isn't exactly what she needs.

The heart of art, of pleasure, sensuality and politics, Demonia is glorious and terrible. And, an assassination attempt, three marriage proposals and one ruined dress after her arrival, it seems Demonia might be more complicated than Lila thought ...

Justina Robson¿s superb new series combines her trademark themes of the nature of identity and reality, magic and technology, with a break-neck plot, a mischievous sense of fun and a seriously sexy new heroine.

Justina Robson (acclaimed author of NATURAL HISTORY, LIVING NEXT DOOR TO THE GOD OF LOVE and the QUANTUM GRAVITY series) is back with a cutting edge novel of science, adventure and ideas.

On a world where science and magic are hard to tell apart a stranger arrives in a remote town with news of political turmoil to come. And a young woman learns that she must free herself from the role she has accepted.

Always vivid, always full of stunning ideas and imagery, Justina Robson is the Clarke Award-winning author of some of our most exciting, yet philosophical SF. A new novel from her is a major event in the SF calendar.