Carl Eric "Charlie" Brandt (February 23, 1957 – September 13, 2004) was an American serial killer who murdered at least four female victims; one in Indiana and three others in Florida.

Growing up in Fort Wayne, Indiana, Brandt shot his parents in their family home on the night of January 3, 1971, when he was 13, killing his pregnant mother and wounding his father.

This incident, Brandt's efficiency in killing his wife and niece, and his hidden obsession with human anatomy led investigators to look into the possibility that he had committed other murders since moving to Florida in 1973.

[2] On the evening of January 3, 1971, after their children had turned in for the night in their Fort Wayne home, Herbert Brandt was shaving in the bathroom while Ilsa, eight months pregnant, was taking a bath.

Charlie Brandt, then aged 13, abruptly walked into the bathroom and shot both parents at point blank range with his father's handgun, which he had taken from a dresser.

Angela eventually convinced Brandt to go upstairs to retrieve blankets for their infant sisters, who were unharmed, before fleeing the house and seeking help from neighbors.

Upon being interviewed by police, Brandt attributed the shooting to "a combination of things" related to school, stating that, "Everything sort of just snapped in my mind.

Brandt also alluded to an incident that took place a few days before the shooting, near the end of his family's annual Christmas vacation in Florida, in which Herbert shot and killed their dog while the two were hunting.

Because he was too young to be tried for murder under Indiana state law, Brandt spent one year at a psychiatric hospital before being released back into the custody of his family in June 1972.

Following the discovery of the bodies, a search of Brandt's residence on Big Pine Key revealed that he was a monthly subscriber to Victoria's Secret catalogs, had an extensive collection of surgery-themed books, posters, and clippings, and regularly searched online for autopsy photos and snuff film websites depicting violence against women.

Teri had further confided in her brother-in-law that she suspected Brandt in the Perisho killing, and that he had come home with blood on his shirt that night, which he claimed was from him filleting fish.

[9] Ultimately, the search prompted police to reinvestigate unsolved murders in Florida dating back to 1973 for potential evidence of Brandt's involvement.