The Zodiac Killer was known for sending cryptic letters about his crimes to newspapers and police, per the San Francisco Chronicle. These letters often included ciphers and coded messages.

Zodiac Killer's Cipher Solved by Code Experts 50 ... The newspapers ran the ciphers, and on Aug. 4, a Salinas high school teacher and his wife called the Chronicle. They had cracked it, beating ...

The Zodiac Killer was known for sending cryptic letters about his crimes to newspapers and police, per the San Francisco Chronicle. These letters often included ciphers and coded messages.

The Zodiac gained popularity in the late 1960s and mid-1970s for sending letters and cryptograms to the media ... attributed with seven murders, but the killer, in a letter he wrote in 1974 ...

The Zodiac killer is one of the most notorious killers of all time, but has never been caught. Now, a family who knew the prime suspect Arthur Leigh Allen have come forward for the first time in the ...

While elements of the zodiac killer’s crimes have been solved, including several of the ciphers he sent to the media, others ...

the killer and their unsolvable ciphers are still puzzling sleuths more than 60 years later. According to the San Francisco Chronicle, which was the recipient of 17 of the 22 letters the Zodiac is ...