What if the man Roberts's wife cheated with also had been Roberts' business companion (like a Tony Soprano kind of guy). Bonus idea: this man was also a member of a very "honorable" family. He maybe financed Roberts' research program on synthetical drugs which are able to boost a person's physical attributes. Unfortunately, Roberts' lost his mind after watching a very special episode of "Cheaters" and ended some people's lifespans very abrupt. After he got arrested, the family send a mole into the prison - Durai - to extract some of Roberts' information, but the time was too short. Damn, I do not know how to link z-day to that theorie in order to add the coherence needed to make it sound compelling...