Irish Police Procedural

10am: A mother rushes for a train after dropping her daughter at school but is reported missing when she doesn't return to pick her up. 2.47pm: The same train causes the death of a young woman; her body bound and placed on the tracks. When Detective Alana Mack discovers the missing mother has vanished from the same train that claimed the life of the young woman, she fears the worst. A killer is on the loose, targeting women and leaving their broken bodies scattered across Dublin's Dart train line.

Eddie Sutherland is dead. Normally, Detective Wes O'Brien wouldn't care about another dead drug dealer, but he may just be the man who killed him. Thrown off the force and under investigation, Wes is called upon privately to look into a cheating spouse case.

How can a dead woman avenge herself on her killer 20 years after her murder? This is the puzzle facing Ben Devlin in his latest case. He is called to the scene of a murder - a man has been stabbed to death in his rented room, and when his identity is discovered, Devlin feels a ghost walk over his grave, as he knows the name Brooklyn Harris well. As a teenager, Harris beat his then-girlfriend Hannah Row to death, and then spent 12 years in prison for the murder.

A man is found in his car, having met a painful death. Another man is found in the woods, clearly murdered. DI Aidan Burke seeks to establish the connection between these deaths. The first man is a wealthy property developer. Little is known about the second victim. Burke's sergeant, DS Fiona Moore, sets to work gathering evidence. But the investigation turns up some unusual findings that point to serious organized criminal activity.

It is only a passing comment in the post office in a remote part of Western Ireland that alerts police to the disappearance of Davin Faherty. But foul play is established when his unceremoniously wrapped corpse turns up in a bog. His brother falls under suspicion, but why kill over a near-useless piece of grazing land? DI Maureen Lyons leads the investigation but relies on trusty Mulholland, the old-school local policeman stationed in Clifden, for the legwork. She has other problems: an illegal cannabis farm and a prospector from a US minerals company who won't take no for an answer.