Sean Duffy · #4
Gun Street Girl
Belfast, 1985. Amid the Troubles, Detective Sean Duffy, a Catholic cop in the Protestant Royal Ulster Constabulary, struggles with burnout as he investigates a brutal double murder and suicide. Did Michael Kelly really shoot his parents at point-blank and then jump off a nearby cliff? A suicide note points to this conclusion, but Duffy suspects even more sinister circumstances. He soon discovers that Kelly was present at a decadent Oxford party where a cabinet minister's daughter died of a heroin overdose, which may or may not have something to do with Kelly's subsequent death.
New evidence leads elsewhere: gun runners, arms dealers, the British government, and a rogue American agent with a fake identity. Duffy thinks he's getting somewhere when agents from MI5 show up at his doorstep and try to recruit him, thus taking him off the investigation.
Duffy is in it up to his neck, doggedly pursuing a case that may finally prove his undoing.
The series
Amid the foggy streets and tense neighborhoods of 1980s Belfast, the Sean Duffy series immerses readers in a city brimming with secrets, suspicion, and moral complexity. At its heart is a detective navigating not just violent crime, but the invisible pressures of a society divided by politics, religion, and loyalty. Each case is more than a puzzle, it is a collision of personal ethics, institutional corruption, and the everyday realities of life under constant scrutiny.
Read full series description
The series weaves together atmospheric settings, sharp dialogue, and a darkly intelligent humor that illuminates the human cost of violence and the resilience of those who confront it. From unraveling serial murders to chasing elusive conspiracies, the stories explore how ordinary people are shaped and sometimes shattered by extraordinary circumstances. The backdrop of Northern Ireland during the Troubles is not just a historical setting, it shapes every choice, every risk, and every consequence that Duffy faces.
Through meticulous world-building and deeply realized characters, the series balances suspense with insight, making readers feel the tension of each investigation while understanding the weight of history pressing on every street corner. It is a journey into noir-infused crime fiction where the stakes are as psychological as they are procedural, and the atmosphere is thick with uncertainty, danger, and moral ambiguity.
For those drawn to crime novels that combine historical depth, intricate plotting, and psychological tension, the Sean Duffy series delivers an experience that is both gripping and haunting, keeping readers on edge long after the last page is turned.
#0.5 · 2025God's Away on Business 
#1 · 2012The Cold Cold Ground 
#2 · 2013I Hear the Sirens in the Street 
#3 · 2014In the Morning I'll Be Gone 
#4 · 2015Gun Street Girl 
#5 · 2016Rain Dogs 
#6 · 2017Police at the Station and They Don't Look Friendly 
#7 · 2023The Detective Up Late 
#8 · 2025Hang on St. Christopher 
#9 · 2027Sean Duffy Book 9 Be the first reviewer
Sign in and write the first reader review.
