Hold Tight

I quite enjoyed Hold Tight by Harlan Coben as it had many twists and turns and different threads which were all tied up at the end. The story begins with a gruesome murder and the motive is not made clear till the end. As well a teenage boy, Adam, is going through some troubled times and his parents spy on his computer in an effort to help him. They then discover what Adam has got himself into - involved with drugs etc. and friend's suicide. By the end, the different and seemingly unconnected threads come together. 3 1/2/5