Timeline
Events
Some of the events listed here are merely debated to be the work of the Zodiac Killer. Only event entries marked with an asterisk (*) are officially confirmed by police to be the work of the Zodiac. Mail Event locations and dates are based on postmark dates.
| Date | Event | Location |
|---|---|---|
| 1963-06-04 (Tuesday) | Murder - Robert Domingos, Linda Edwards | Santa Barbara, CA |
| 1966-10-30 (Sunday) | Murder - Cheri Jo Bates | Riverside, CA |
| 1966-11-29 () | Mail - Riverside PD and Press, Confession | Riverside, CA |
| 1966-12-00 () | Desktop poem | Riverside, CA |
| 1967-04-30 () | Mail - “Bates had to die” letter | Riverside, CA |
| 1968-12-20 (Friday)* | Murder - David Faraday, Betty Lou Jensen | Vallejo, CA |
| 1969-07-05 (Saturday)* | Murder - Darlene Ferrin, Mike Mageau | Vallejo, CA |
| 1969-07-31 ()* | Mail - z403 Cipher, ran 08-02, solved 08-08 | San Francisco, CA |
| 1969-08-04 ()* | Mail - Debut of “Zodiac speaking” letter | San Francisco, CA |
| 1969-09-27 (Saturday)* | Murder - Cecelia Shepard, Bryan Hartnell | Napa, CA |
| 1969-10-11 (Saturday)* | Murder - Paul Stine, cab driver | San Francisco, CA |
| 1969-10-13 ()* | Mail - Paul Stine piece-of-shirt letter | San Francisco, CA |
| 1969-10-22 () | Call - To SFPD requesting Melvin Belli | San Francisco, CA |
| 1969-11-08 ()* | Mail - z340 Cipher, dripping pen, ran 11-12 | San Francisco, CA |
| 1969-11-09 ()* | Mail - Bus bomb letter, “killed 7” | San Francisco, CA |
| 1969-12-20 ()* | Mail - Melvin Belli letter, “take my ninth” | San Francisco, CA |
| 1970-01-25 () | Murder - Charles Jarman, cab driver | San Francisco, CA |
| 1970-03-22 (Sunday) | Assault - Kathleen Johns | Patterson, CA |
| 1970-04-20 ()* | Mail - z13 Cipher, “My name is”, “killed ten” | San Francisco, CA |
| 1970-04-28 ()* | Mail - Dragon card | San Francisco, CA |
| 1970-06-26 ()* | Mail - z32 Cipher, Map, button letter, “Z-12” | San Francisco, CA |
| 1970-07-24 () | Mail - Kathleen Johns letter, “burning car” | San Francisco, CA |
| 1970-07-26 () | Mail - “Little list” letter, “Z=13” | San Francisco, CA |
| 1970-09-06 (Saturday) | Murder - Donna Lass | S Lake Tahoe, CA |
| 1970-10-12 () | Mail - 13 Hole card, “Mon. Oct 5”, “13” | San Francisco, CA |
| 1970-10-26 () | Mail - Halloween Card, “4-teen” | San Francisco, CA |
| 1971-03-13 () | Mail - LA Times letter, “Riverside”, “Z=17+” | Pleasanton, CA |
| 1971-03-22 () | Mail - Sierra Club Tahoe card, “victim 12” | No Postmark |
| 1974-01-29 () | Mail - “The Exorcist” letter, Mikado, “Me-37” | San Francisco, CA |
| 1974-02-14 () | Mail - “SLAy” letter, “a friend” | Unknown |
| 1974-05-08 () | Mail - Citizen card, “Badlands”, “A Citizen” | Alameda County, CA |
| 1974-07-08 () | Mail - “Red Phantom” letter, “Count Marco” | San Rafael, CA |
| 1978-04-26 () | Mail - “I am here” letter | San Francisco, CA |
| 1990-12-00 () | Mail - Secret Pal xeroxed keys xmas card | unknown |
Sources: zodiackiller.com, zodiacciphers.com, wikipedia.com, projects.sfchronicle.com/2018/zodiac-timeline
Witness Accounts
Compilation of Eyewitness Descriptions - This is a nice spreadsheet by Chaucer
