The Investigations Division is staffed with four full-time Detectives. Their cases are generally assigned by the Assistant Chief of Police and generate from the patrol division or are self-generated by the detectives. All of the detectives at the Police Department are "General Assignment" detectives which means that they can be assigned to investigate any type of crime from a minor theft to a homicide. Each detective was selected after serving at least seven years of uniform patrol and completing of a number of specialized and advanced schools. The Investigations Division is a full service unit and can respond to any call for service where an investigation is required.
The City of Gatlinburg has an arson investigator who also serves as a fire inspector with the fire department and who has been through the Tennessee Law Enforcment Academy and maintains his law enforcement certifications. He is a sworn law enforcement officer and conducts arson investigations for the Police Department.