Doakes provides the necessary friction within the police department. His instincts are correct; he is the only one who sees Dexter as a "freak." His arc is tragic: he is a good cop who gets too close to the truth, resulting in his imprisonment in a cabin in the Everglades. The audience is placed in a morally complex position, rooting for the serial killer (Dexter) while sympathizing with the innocent but abrasive cop (Doakes).
: After scuba divers accidentally find his dumping ground, the FBI sends high-profile Special Agent Frank Lundy to lead a task force alongside the Miami Metro PD to catch the killer. dexter season 2