The Brittle Sky is book three in a trilogy, an historical drama series, and as such should be read in sequence.
The war to end all wars is over with millions dead. Now there is a chance for peace.
But for Maggie and Richard Blackmore, their search for each other goes on.

The darkness crowds in once more on Maggie's mental health and soon the world is plunging toward anarchy and another war.

"There I saw my mother, as she was when I was young.
Eyes so bright and shining,
reflected by the sun.
But soon her smile did turn to fear, tears were in her eyes.
Darkness crowded in that place,
beyond the brittle skies."