American lawyer and true crime writer (1934–2015)
Source (Wikipedia): Vincent Bugliosi

Vincent T. Bugliosi Jr. was an American prosecutor and author who served as Deputy District Attorney for the Los Angeles County District Attorney’s Office between 1964 and 1972. He became best known for successfully prosecuting Charles Manson and other defendants accused of the Tate–LaBianca murders that took place between August 9 and August 10, 1969.