TANA FRENCH - Broken Harbour

In Broken Harbour, a ghost estate outside Dublin, two children and their father are dead. The mother is on her way to intensive care.
At first Detective Scorcher Kennedy, and his rookie partner, Richie, think this is cut and dry: Pat Spain was a casualty of the recession, so he killed his children, tried to kill his wife, Jenny, and then himself. But inexplicable details keep cropping up.
Soon the neat compartments of Scorcher's life begin to break down, putting both his professional and personal life at risk. As the case reaches its apex, he will be forced to face the truth of what happened to him and his family all those years ago, one dark summer at Broken Harbour.