Saul Black Books in Order

Two brutal killers are moving across America, leaving tortured women behind them. San Francisco detective Valerie Hart is already near the edge when a child's survival offers the first real chance to stop the slaughter.

A fresh mutilation bears the unmistakable signature of Katherine Glass, a notorious murderer already behind bars. When a note at the scene is addressed to Valerie Hart, the case turns into a personal descent back into a killer's mind.

A former prosecutor is found murdered in his home, and the evidence seems to point to an obvious suspect. Valerie Hart is not convinced, and the deeper she digs, the more the case tangles with old secrets and her own past.