Thirteen men. One park. A pattern that dared the city to look. Between July 2007 and August 2008, a series of killings in Paturis Park carved a cold path through Carapicuíba on São Paulo's western edge. Victims-mostly gay men-were found at night, partially undressed, executed with a .38 and left where the vegetation meets the path. The city celebrated visibility downtown while fear collected in the undergrowth. What happens when a public space becomes a quiet hunting ground?This narrative reconstructs the nights and the file work: site fidelity to a single park, the clean efficiency of a revolver, and the humiliating signature repeated again and again. It traces the escalation to a final barrage of twelve rounds; the presence of a witness called "Leonardo," tested and cleared by gunshot residue; and the official recognition that came late, after the bodies had already made their argument.Along the way, you'll step into the mechanics of a forensic investigation starved of time stamps and CCTV; into the language of ballistics without a recovered weapon; into the gaps that leave unsolved murders hanging between certainty and doubt. Is it one serial killer with a single gun-or multiple actors exploiting the same dark cover? Why did the killings stop when they did?This is true crime conducted with steadiness and care, centering the men who were targeted and the community that still carries their names in silence. It wrestles with bias, jurisdictional seams, and the long shadow of an LGBTQ+ hate crime. This book contains no images-only cinematic narrative written in the style of a detective-investigator. When the record ends, the narrative stops with it. What lingers is the human cost-and the unfinished work of naming what happened in São Paulo.Reader Promise: You will follow a clear timeline of the park's thirteen months of violence; walk the interior paths where evidence should have been; examine witness accounts and lab constraints; and understand how a cold case hardens-not from mystery alone, but from missed connections.This Book Is For Readers Who...want a grounded, document-forward journey through a relentless pattern.are drawn to casefiles that balance atmosphere with restraint.study how geography becomes an accomplice to violence.look for victim-centered storytelling without sensationalism.examine institutional silence alongside investigative effort.measure what "unsolved" really means on paper and in memory.Perfect For Fans Of...Ann Rule - The Stranger Beside MeMichelle McNamara - I'll Be Gone in the DarkJohn E. Douglas & Mark Olshaker - MindhunterMaureen Callahan - American PredatorGregg Olsen - If You TellWhy it endures: Because thirteen men should not be reduced to rumor and a headline. Their pattern is the map; their absence is the call. Open the file. Read the night.