An episode of Criminal Confessions reveals the moments that serial killer Sean Vincent Gillis confessed to killing and mutilating eight women between 1994 and 2003 in Baton Rouge.
Terri Malone had never noticed any strange behavior from her ex-boyfriend, Sean Gillis.
Terri had learned of her ex-boyfriend's secrets during his trial.
Sean Gillis was lying about the presence of blood in his car.
Baton Rouge investigators discover they have a potential serial killer on their hands.