York Street: A Ghost and a Cop Series
Jan Walters, author
A serious, young street cop, Brett O'Shea, hopes to make detective. Brett doesn't believe in the paranormal. He is forced to alter his beliefs when a ghost, Al, appears and announces that he's been sent to help Brett catch a serial killer and to solve the murder of his great-grandfather that occurred in 1933. The pair quickly find themselves in trouble when they realize the killer has unique powers of his own.