CLAIRVOYANT CAN'T CATCH A BREAK!

Brett always knew he wasn't a normal kid, for one, he can see some things that no other ordinary person can see. The entities he had been seeing since he was a little kid hadn't really bothered him at all. They were just there, walking absentmindedly around.

or, alternatively, Brett is a clairvoyant and Eddy is one gifted with powerful aura that attracts ghosts. Therefore, Brett has a job to protect him.