Dervla McTiernan (born c.1977) is an Irish crime novelist.

She was a practicing lawyer before giving writing a go.

The Ruin (2018) is her debut novel.  A critically acclaimed international bestseller. It won the Ned Kelly Award for Best First Fiction, the Davitt Award for Best Adult Fiction and the Barry Award for Best Original Paperback, and was shortlisted for numerous other prizes.

Cormac Reilly is about to reopen the case that took him twenty years to forget …

Responding to a call that took him to a decrepit country house, young Garda Cormac Reilly found two silent, neglected children – fifteen-year-old Maude and five-year-old Jack. Their mother lay dead upstairs.

Since then Cormac’s had twenty high-flying years working as a detective in Dublin, and he’s come back to Galway for reasons of his own. As he struggles to navigate the politics of a new police station, Maude and Jack return to haunt him. …

Betrayal is at the heart of this unsettling small-town noir and the Ireland it portrays. In a country where the written law isn’t the only one, The Ruin asks who will protect you when the authorities can’t – or won’t.

dervlamctiernan.com

Personally, I felt the story telling was not great. Too many peripheral characters. Too slow.