The Great Walker — Nick Marsden

The Order of the Night
In the shadows of the Night hide the forgotten -- part human, part monster. Only the Order of the Night fights for those who cannot resist the pull of evil's might: the people on The Edge of Night.

The last of his kind. The last hope for the forgotten.
A nameless, young monk-in-training botches the most important test of his life and unleashes the demon that has haunted the nightmares of the Order for two-thousand years. To stop it, he must find the inner-strength to make the ultimate sacrifice in the name the Order of the Night.