Between 1976 and 1977, a mysterious gunman terrorized New York City.
He attacked people without warning, sent disturbing letters to newspapers, and called himself “Son of Sam.”
Six people were killed and seven others were wounded before police finally identified and arrested the killer.
But how did investigators find him?
Follow the clues, the letters, and the investigation that finally ended one of New York’s most terrifying crime sprees.
America Explained brings you real American true crime, unsolved mysteries, serial-killer cases, and dark history.