Detective Ian Wilson / The Belfast Murders Books in Order

A professional assassin targets young Protestant men in Belfast as sectarian tensions rise. DCI Ian Wilson's search for the killer leads into the city's history, where political loyalties and concealed crimes complicate his team's pursuit of justice.

A priest's brutal murder initially suggests sectarian violence, but another killing points to a planned campaign. Wilson faces obstruction from church and police authorities while an internal investigation threatens his career and distracts from the killer's next move.

The murder of a crime boss's mother threatens to ignite violence across Belfast. As similarly brutal killings mount, Wilson investigates a serial murderer while confronting buried history and an internal inquiry that endangers his position.

At a personal and professional low point, Wilson is assigned a forty-two-year-old murder with almost no surviving records. As he investigates, he realizes someone may have chosen the cold case specifically to dismantle what remains of his life.

Two young men's apparently natural deaths prompt Wilson to investigate despite official disapproval. A pathologist's suspicions uncover a hidden force rooted in Ulster's violent history, while relationship problems and changes within his team increase the pressure.

Persuaded to return to policing, Wilson leads a reorganized murder squad while a gang boss remains missing. The discovery of a secret burial site threatens to expose one of Ulster's most closely guarded crimes.

The discovery of a young woman's torso gives Wilson's team little evidence and no obvious motive. The search for her identity leads him back to an unresolved murder and a secret connected to the region's dirty war.

A cross-community paramilitary smuggling operation leaves a farmer dead and a journalist wounded. Wilson's investigation exposes cooperation between former enemies, while the assault of a young child draws his squad into another dangerous criminal network.

The killing of a former drugs officer gives Wilson's squad a deeply personal investigation. A link to an older supposed accident revives the stalled case, while a separate unauthorized inquiry puts another detective's life at risk.

A young man's fatal beating near the Irish border draws Wilson into a joint investigation with a Garda colleague. Fears of renewed border conflict surround their search through a secretive region dominated by organized crime.

Wilson faces a personal vendetta while two gay men disappear in Belfast. A detective with ties to the missing men risks becoming another victim, and a returning colleague takes charge of a poisoning case with concealed motives.

Detective Ian Wilson faces a final confrontation with the Circle. Their long conflict reaches a decisive moment, with the prospect of a mortal blow hanging over both Wilson and the organization he has been fighting.