The friction between Perry and girlfriend Anna seem to increase every time he's back from fighting in Afghanistan. His silence papers over cracks left in Perry's life with his father's death before he was born. Friction causes sparks, and flames ignite. A young friend is brutally killed, and Anna and Perry are catapulted into a life of twisted violence and secrets that reach back in time to World War One, when another young man frightened in the trenches called for salvation from the horrors of war - and finds an unholy ally who can help him...for an unspeakable price.