Hidden in Blood & Shadows: Songs of Shadow & Sorrow Book 1 (Paperback) (ISBN-13: 9780645703405)

Harper had never felt like she belonged anywhere. She was an outsider among her own kind and hated by humans. Now, someone was killing Erinyes and leaving behind strange ritualistic markings. If Harper ever hoped to follow in her father's footsteps, she needed to figure out who was doing the killing and why.

She wasn't the only one investigating the murders.

Gage was looking for justice, or vengeance. He wasn't sure what the difference was anymore. Someone was targeting his family, and if he couldn't let go of his vendetta, he would lose even more than he already had.

Together, they were caught in a mystery that had been hidden for a long time. How exactly did the Endless War end?

Some things were better left forgotten, as they might not survive the answers they find.