Have just finished my first book of the year, The Stuff of Nightmares by Malorie Blackman. When Kyle is in a train crash, he finds himself drawn into the nightmares of fellow passengers, some who are strangers, some his friends. This allows for a collection of short stories - these are varied, but most are about death, and some are a little disturbing. This is definitely not for younger readers, it's not explicit as such, but there are some disturbing scenes.
The writing is good, and it's a gripping, fast paced book, and I'm going to put a couple more of hers on my wish list.