Dennis Hightower

Dennis Hightower is a one-time character in the American supernatural television series Ghost Whisperer.

Biography
Dennis is in a relationship with Christine Nelson, who is also autistic. After Dennis dies, his ghost lingers around.

Autism
Dennis is stated to be autistic within the episode. He often communicates via echolalia.

Episode list
Ghost Whisperer
 * season 2, episode 4: "The Ghost Within"