The Guardian of Threshold: An Astral Adventure (Threshold Series Book 1)

Although it's normal for a sixteen-year-old teenager to be chasing the girl next door, Mark Anthony has much bigger problems. For starters, Mark can't forgive himself for his mother's death, his father couldn't give two hoots about him and his house is in complete shambles.
Now, he's certain that death is coming for him.
After an accidental out-of-body experience, Mark discovers a world beyond where the dead lives and dangers awaits the bravest of souls willing to risk everything and everyone for a mere glimpse of a loved one.

The only question is how far is Mark willing to go?