Don't have an e-reader but it looks like a good summer read

I don't have an e-reader, but still had a peek at the extract. I wish I hadn't because it looks promisingly good. It just caught my attention and kept me engaged, which is unsurprising because it is a thriller. Will there be a happy ending? Probably not, but why not? I won't know. I will be keeping my eyes peeled for this in shops.