A complete steamy dark mafia romance package — story bible with Marchetti empire world-building and FBI informant tradecraft detail, dual first-person voice system with distinct registers, relationship progression timeline, heat level guidance with scene-by-scene escalation, AI writing prompts for every chapter, marketing copy with Amazon categories and keywords, and a 4-book Marchetti series framework. Built on K-Lytics data targeting Dark Romance / Mafia (6.8, Hot Niche) cross-listed with Romantic Suspense / Undercover (4.1, Hot Mainstream). One buyer only — this story is exclusively yours.