Before revision: Joseph James DeAngelo – A serial killer and rapist who was active in California in the 1970s and 1980s, who is known to have murdered 13 people between 1975 and 1986.
After revision: Joseph James DeAngelo – A serial killer and rapist who was active in California in the 1970s and 1980s, who is known to have murdered thirteen people between 1975 and 1986.