David A. Robertson 
Strangers [PDF ebook] 

A talking coyote, mysterious illnesses, and girl trouble. Coming home can be murder…When Cole Harper gets a mysterious message from an old friend begging him to come home, he has no idea what hes getting into. Compelled to return to Wounded Sky First Nation, Cole finds his community in chaos: a series of shocking murders, a mysterious illness ravaging the residents, and reemerging questions about Cole’s role in the tragedy that drove him away 10 years ago. With the aid of an unhelpful spirit, a disfigured ghost, and his two oldest friends, Cole tries to figure out his purpose, and unravel the mysteries he left behind a decade ago. Will he find the answers in time to save his community?