Alter ego
(Book)

When a freak accident kills a driver on the remote roads outside Duluth, Jonathan Stride is disturbed to discover that the victim appears to be a ghost, with a false identity and no evidence to suggest who he really was. What's worse, the man has a gun locked in the trunk, and it has recently been fired. It's up to Stride to solve the mystery, but there are those who would stop at nothing to stop him.