Hell's Heroes by Darren Shan

The book "Hell's Heroes," the last book of Darren Shan's "Demonata" series is one of the best books in the series. It is about the three people chosen to either save the Earth from demons or destroy Earth as we know it: Grubbs, a werewolf who is crazy with grief and anger, Kernel, a boy blinded by his ally and held on Earth against his wishes, and Bec, a girl from hundreds of years ago who has pledged herself to Lord Loss, and demon master, and Death itself. All three of them are a piece of the Kah-Gash, a very ancient object which has the power to create or destroy worlds. Their goal was to destroy the demon universe, but plans got halted with the betrayal of Bec, the growing power of Death, and massacres of humans all over Earth. Will these three beings manage to save the world as we know it? Or will Earth drop into a world of blood, death, and darkness?

I would recommend this book to people who like creepy and very bloody books, and who can handle reading about slightly uncomfortable things and situations. If you like all of these things, then I strongly suggest you read this series.