The lighthouse keeper was dead. His body lay sprawled below. Detective Sarah Chen arrived first. Rain hammered the rocky coast. She climbed the steep stairs. The door hung open, creaking. Wind howled through empty rooms. Blood pooled on stone floor. His eyes stared at nothing. A lantern flickered, then died. Sarah noticed the broken window. Glass scattered across the desk. An unfinished letter lay there. "They know about the shipment." Sarah read the words aloud. Thunder crashed overhead once more. Someone had silenced him permanently. But who wanted him dead? The investigation had just begun.