First, I THINK the cover of the book had some shadowy face of a dog esque creature on the side, and then a couple of shadowy zombie looking people on there too. It starts out with some kid whos being
driven or something to Wales, and he just woke up from a coma and cant remember anything. He has a trusty dog I believe. Throughout the story he begins to learn he was some warrior of the good side, the
"Light" or something, and he was battling some metaphorical forces of darkness that were "gathering on the horizon" or so the book says (something like that).
Also, at some point, he is audience to a council of the light side guys, who are wise and such (I believe) and they give him a harp, I believe. One of them was actually an evil guy in disguise. Also, at some
point, I think his dog needs help or something, but there is a pebble in his pocket that is weighing him down to the ground completely, and it is implied that the forces of darkness are acting against him in this
way. That is all I remember.