Dreams of God of Monsters (Daughter of Smoke &Bone, #3)by Laini Taylor

synopsis

By way of a staggering deception, Karou has taken control of the chimaera rebellion and is intent on steering its course away from dead-end vengeance. The future rests on her, if there can even be a future for the chimaera in war-ravaged Eretz.

Common enemy, common cause.

When Jael's brutal seraph army trespasses into the human world, the unthinkable becomes essential, and Karou and Akiva must ally their enemy armies against the threat. It is a twisted version of their long-ago dream, and they begin to hope that it might forge a way forward for their people.

And, perhaps, for themselves. Toward a new way of living, and maybe even love.

But there are bigger threats than Jael in the offing. A vicious queen is hunting Akiva, and, in the skies of Eretz ... something is happening. Massive stains are spreading like bruises from horizon to horizon; the great winged stormhunters are gathering as if summoned, ceaselessly circling, and a deep sense of wrong pervades the world.

What power can bruise the sky?

From the streets of Rome to the caves of the Kirin and beyond, humans, chimaera and seraphim will fight, strive, love, and die in an epic theater that transcends good and evil, right and wrong, friend and enemy. 

At the very barriers of space and time, what do gods and monsters dream of? And does anything else matter?

Review

Once upon a time, an angel and a devil pressed their hands to their hearts and started the apocalypse.

The third and final book in the series see the story hit the ground running with the arrival of  Jael and his army in  St Peter's Basilica, Rome.  Though the world's population it torn by what to make of the  situation. Akiva and Karou know that Jael and his minions pose nothing less than a threat to both Earth and Eretz.
With no choice a alliance between  chimaera and the Misbegotten is the worlds' only hope. 

While Akiva and Karou work side-by-side to save the worlds they love an unknown force threatens Akiva.
The adventure has taken Akiva and Karou from the beginnings in Prague across cities and continents and through two worlds. But will their love and hope be enough.

Fans of the series will not be disappointed with the finale.  An immensely satisfying conclusion to an epic, inventive fantasy and love story.

Once upon a time, an angel and a devil held a wishbone between them.