Some cities feed on secrets. Naples is ravenous. A peaceful evening mass at the historic Chiesa del Gesù Nuovo is shattered when a young au pair is killed in one of the cathedral's quiet chapels. The daughter of the US Ambassador sees it happen--but she'll speak only to one person: Nikki Serafino. Shaken by betrayal in her last high-profile case, Nikki has retreated from the relentless vigilance that once defined her work as liaison between Italian police and the US military. Withdrawn and mistrustful, she works her shifts, cares for her aging family, teaches self-defense classes, and avoids entanglement. But this case threatens her self-imposed invisibility--drawing her into a web of lies and resurfacing old wounds and buried loyalties. The murder investigation leads Nikki and her friend, Naples officer Valerio Alfieri, into a shadow architecture of power: built to protect the guilty and hide their secrets at any cost. Can she and Valerio--each carrying dangerous debts--resist the undertow of corruption that swallows truth whole? Set against the chaos of modern Naples--the city of Roberto Saviano's Gomorrah and Elena Ferrante's My Brilliant Friend--where grace and corruption share the same narrow streets, Nikki and Valerio navigate a landscape where even the most principled must confront the cost of survival.