The Zodiac Killer

Detective David tosky was the zodiac caset cide inspector for san francisco's police department. Had originally fronted the investigation into paul stein's murder. Received an unopened letter that had originally been sent to the san francisco chronicle, addressed to the editor. The newspaper staff recognized the handwriting on the envelope immediately and forwarded it to police without opening it. Inside was a letter that began, this is the zodiac speaking a question, followed by the way. Have you cracked the last cipher i sent you? No one had yet cracked the zodiac killer's previous cipher, known as the three forty. His letter continued, my name is the sentence ended abruptly