Jimm Giannini

In an especially baffling case, Dr. Jacob Hood must figure out why severely autistic teenagers are disappearing across the country - only to reappear a month later exhibiting symptoms of savant syndrome.

Tracy starts a new job.

A man driving with a wooden stake in his head dies in front of a casino. Also available on iTunes

When Luther's wife begins to complain he's spending too much time at work and too little time at home, he vows to dedicate less time to Hayden.