Here's a thought, what if the Mailers were in it from the get go, for example, the genetic zombie testing was being performed on the inmates at
Eastern Bay. Inmates would be ideal for testing, some would would participate for a shorter sentence and some would be forced into it. They are confined, and if something goes wrong, the situation could be chalked up to an "accident". You have to wonder where
the Mallers get all their intel and in such as short time. It would also explain the the different types of zombies, markings and the tattoo number 5. For example, if
Bricks was test on, would he be a "Big One" Also, why would the zombies, at the area, want to toy with there food before eating it. Very similar to prisoners with the first taste of power and freedom.