Spooked

This is an Apple Books audiobook narrated by a digital voice based on a human narrator.

Talk about ghosts?

No one here is listening

Living spirits needing help. That's something different.

In that case Brandon was glad to be of assistance.  Not that glad, because he really would rather not see living spirits.

Still finding their unburied corpses and getting them properly in the ground was worthy enough.

If only it ended there.

Finding a dead man's murderer or worse finding out the dead man could still be a murderer was a little too much. 

a mystical optometrist, Doc Dabra,  whose shop mysteriously moves from place tells Brandon to team with Detective Sergeant Wenstead. Together with the additional gifts Doc Dabra awakens in them, they must track down and free the world of once human, evil spirits. And, if they should ever turn up, demons.

As Brandon says, "not the job I was looking for."

Maybe so, but exactly what you might be looking for.  Give it a read.