Adrian McKinty's Hang on St. Christopher is a gripping addition to the Sean Duffy series, a collection of novels that have consistently delivered a potent mix of crime, history, and social commentary. Set against the tumultuous backdrop of Northern Ireland in July 1992, this novel plunges readers into a world where the personal and political are inextricably linked, and where the stakes are as high as they come.

The narrative begins with Detective Inspector Sean Duffy, a character familiar to McKinty's readers, who has managed to relocate his family to the relative safety of Scotland. However, Duffy's ties to Belfast are not easily severed, as he continues to work part-time, returning to the city for six days each month. This setup provides a fascinating duality to Duffy's character—he is a man caught between two worlds, trying to balance his responsibilities as a detective with his duties as a husband and father.

McKinty excels in creating a vivid sense of place, and the Belfast of Hang on St. Christopher is no exception. The rain-slicked streets and the ever-present threat of violence create a palpable tension that permeates the novel. The Troubles, a period of conflict that has left deep scars on the region, serve as both a backdrop and a catalyst for the events that unfold. McKinty does not shy away from the complexities of this era, and his portrayal of the political landscape is both nuanced and unflinching.

The plot kicks into high gear when Duffy is handed a murder case while his protégé is on holiday. What initially appears to be a straightforward carjacking gone wrong quickly spirals into something far more sinister. The victim, a solitary painter, is revealed to be an IRA assassin, and Duffy finds himself embroiled in a dangerous game of cat and mouse. The question of "Who hit the hit man and why?" becomes the driving force of the narrative, propelling Duffy into a web of intrigue involving the CIA, MI5, and Special Branch.

One of the strengths of McKinty's writing is his ability to craft complex, multi-dimensional characters. Duffy is a compelling protagonist, a man who is both deeply flawed and intensely relatable. His cynicism is tempered by a strong moral compass, and his dry wit provides moments of levity amidst the darkness. The supporting cast is equally well-drawn, with each character adding depth and texture to the story. McKinty has a knack for creating characters who feel real, and this authenticity is one of the novel's greatest assets.

Thematically, Hang on St. Christopher explores the idea of loyalty and betrayal, both on a personal and political level. Duffy's investigation forces him to confront the murky ethics of espionage and the blurred lines between right and wrong. The novel also delves into the impact of violence on individuals and communities, and the ways in which people cope with trauma and loss. These themes are handled with sensitivity and insight, adding a layer of depth to the narrative.

In terms of pacing, McKinty strikes a perfect balance between action and introspection. The plot unfolds at a brisk pace, with enough twists and turns to keep readers on the edge of their seats. Yet, the novel also allows for moments of reflection, giving readers the opportunity to engage with the characters on a deeper level. This balance is a testament to McKinty's skill as a storyteller, and it ensures that the novel is both thrilling and thought-provoking.

Comparatively, McKinty's work shares similarities with other crime novels set during politically charged periods, such as Philip Kerr's Bernie Gunther series, which is set in Nazi Germany. Both authors use historical events as a backdrop for their narratives, and both excel in creating atmospheric settings and complex characters. However, McKinty's focus on the Northern Irish conflict gives his work a unique perspective, and his ability to weave together personal and political narratives sets him apart from his contemporaries.

Overall, Hang on St. Christopher is a masterful addition to the Sean Duffy series. It is a novel that is as much about the human condition as it is about crime and politics. McKinty has crafted a story that is both entertaining and enlightening, a testament to his skill as a writer. For fans of the series, this installment will not disappoint, and for newcomers, it serves as a compelling introduction to the world of Sean Duffy.

In conclusion, Adrian McKinty has once again delivered a novel that is rich in detail, character, and emotion. Hang on St. Christopher is a powerful exploration of a turbulent time in history, and it is a story that will resonate with readers long after the final page is turned. Whether you are a fan of crime fiction or historical novels, this book is a must-read.