Say Nothing is advertised as though it's a true crime but the case of Jean McConville's disappearance is just a loose binding to what is essentially a history of The Troubles. From other reviews I've read a lot of people go into this expecting a true crime novel and are disappointed. But if you go into it as a narrative nonfiction history then it's incredibly readable and well written. Patrick Radden Keefe has clearly done his research and, mainly, stays impartial. You will kind of hate Gerry Adams by the end though!
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 I think this would be a good introduction to The Troubles for people who weren't around for this particular part of history, or just as a more detailed look if most of your knowledge came from Newsround in the 90's.