Absent Pity (Amber Young, #1)

When Amber Young, a quiet, brilliant newspaper puzzle editor, detects a hidden cypher, she realizes a serial killer is leaving clues hidden in plain sight. The FBI’s BAU unit needs Amber’s unique genius to help them decode the mystery and catch a killer before it’s too late, and in this page-turning, cat and mouse thriller, it’s a battle of clues, riddles, twists—and genius.