Zodiac Killer Wiki
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Ross Mario Sullivan (July 28th, 1941 - September 29th, 1977) is a suspect in the Zodiac case.

Early life[]

Sullivan was born in 1944 in Syracuse, New York, to Harold and Harriet Sullivan. He later moved to Glendale, California, and graduated from Glendale High School. In 1961 he attended Riverside City College, where he worked as a library assistant. Co-workers stated that Sullivan bragged about going to Patton State


Sullivan died of a heart attack on September 29, 1977 at the age of 36. He was cremated and his ashes were either given to a family member or friend. You can find his index here on Findagrave.com.

Evidence against Sullivan[]

  • He was closely linked to the non-canonical Zodiac victim Cheri Jo Bates in 1966.
  • He was working at the campus and made people feel uneasy around him.
  • He did not show up for work after the Bates Murder and acted rather suspiciously. It is also said that he always wore the same outfit, After the murder he wore a completely new outfit.
  • He doesn’t just look similar to the sketch; he looks exactly like it.
  • The same vocabulary and writing style was used in the Confession Letter and the Zodiac Letters.
  • People at Riverside have stated that Ross wrote creepy poems.
  • He wrote an essay on how to disguise handwriting.
  • He moved to Santa Cruz in 1968.
  • He died in 1977 which might explain why the murders stopped.
  • In the decoding of the "340-chiffre" in Dec'2020 (see https://www.youtube.com/watch?v=-1oQLPRE21o), there is a strange erroneous code "NOSRVS" in the decoded text that could have been intentionally introduced by Sullivan as some sort of obfuscated "Ross Sullivan" acronym