No Stone Unturned has been widely praised by critics for its investigative reporting and its sensitive and human portrayal of the victims and their families. The book has won several awards, including the 2018 Orwell Prize for Political Writing and the 2018 James Cameron Award for Journalism.
Many critics have praised Cobain's ability to combine meticulous research with a compelling narrative. The book is full of vivid anecdotes and personal testimonies that bring the victims and their stories to life. Cobain also does an excellent job of weaving together the different strands of the story, including the political and historical context of the Troubles and the ongoing efforts of the police to solve the murders.
Overall, No Stone Unturned is a powerful and important piece of literary journalism that sheds new light on one of the darkest chapters in Northern Irish history. It is a must-read for anyone interested in the Troubles or in the art of narrative nonfiction.