I've read several crime novels this year, both adult and YA, and found myself screeching with scorn because of their sheer implausibility. Some writers try too hard to be sensational, but in the process just make the plot unbelievable. This is not one of those books! It's a slow burn which draws you in and makes you really care what happens to the characters. And then one of them is murdered! This is an intelligent and well-thought-out read - just the thing to curl up with on a winter night. This is the third in the series and I am desperate to read the fourth.