As a Sergeant-Detective within Miami Metro Homicide, she worked alongside Detective Joey Quinn and Lieutenant Angel Batista in Homicide Investigations. She had some tension with forensic-tech Vince Masuka, but only in the sense of being annoyed by his behavior and pervy comments..
Angie was first seen after Mike Anderson was shot and killed in the line of duty, and she became one of the detectives investigating the shooting. She began to fill the role as Anderson's replacement, but to a lesser degree. Angie remained in the background, speaking up only on occasion.
Angie's role broadened, as she appeared frequently at crime scenes and spoke with the main cast multiple times. Following Angel Batista's promotion to Lieutenant, after the death of Captain Maria LaGuerta and the resignation of Lieutenant Debra Morgan, his Sergeant-Detective position was left open. Two known candidates applied for the position - Angie and Detective Joey Quinn. Both passed the Sergeant's exam, but Batista picked Miller due to her skills, intelligence, and trustworthiness. Also, Deputy-Chief Tom Matthews had pressured Batista to pick her saying that it would be good "PR" to have an African-American woman in the position.
- She does not appear in the series Finale, despite other common background detectives appearing.