Derrick Rockman is Senator DeBlass's assistant. At first Derrick Rockman appears annoying, interfering in Dallas's investigation and attempting to follow her in order to keep tabs on the investigation. However, it later becomes clear that Rockman is a psychopath who believes that DeBlass will change the world when he becomes president. Rockman will do anything for DeBlass, including killing for him. Dallas learns that Rockman cleaned up the murder scene in the Sharon DeBlass case and then killed two other prostitutes to keep the focus of the investigation off of Senator DeBlass.