Although Dexter's killer protagonist was always careful not to get caught, there were a number of key characters who find out about Dexter Morgans dark passenger over the course of the series. Dexter documents the life of Dexter Morgan, a vigilante serial killer who also happens to be the blood-spatter analyst for the Miami Metro Police Department. Dexter operates his serial killing unconventionally, sticking to a strict code where he can only kill those who deserve it confirmed murderers who have evaded the justice system.

While trying to appease his dark passengers need for blood, Dexter has to carefully avoid getting caught while on the hunt and after he kills. His most important rule while serial killing is to not be caught, which means not letting anyone know his real identity or acting in a way those around him find suspicious. Aside from his many victims who obviously knew...