Revenge of the Shadow People (Ghosts of Fear Street #9) by R.L. Stine, Jahnna N. Malcolm - Vintage Paperback

Afraid of your own shadow? Vinny Salvo is. Lately weird things have been happening to his shadow. It's grown horns. And claws. And big sharp teeth! Now it's coming after him!

Vinny needs someplace to hide -- and quick.

But where can you hide from your own shadow?