Whom the Gods Would Destroy (S01E02)

DI Lewis and DS Hathaway investigate the murder of Dean Greely. As the investigation continues, they discover that Greely and three other men had formed a club during their Oxford student days, the Sons of the Twice Born. Today, the men have little contact with one another and initially deny that their club existed. When a second member of the foursome is murdered, it becomes apparent the they have a secret, one from 30 years ago and that someone is out for revenge. (iTunes)