Jääkaksoset

The plot may be barely plausible, but it sure is filled with twists that make the situation even worse than it was a moment ago. You can hear this in the background of every chapter: https://www.youtube.com/watch?v=vfthzU3V4zo

This is a thrilling, exciting book, as long as you're able to bypass the fact that large part of it makes little sense. The setting is just so unnerving and creepy, and things just get worse. It's all very easy to read, so good for light psycho entertainment.