An investigator reviewing archived San Francisco Police Department case files and Bay Area newspaper archives from 1974 to 1975 compiles the following behavioral profile: the subject made initial contact with victims exclusively in gay bars and restaurants frequented by gay men in San Francisco; before or during each encounter, the subject produced a notepad and sketched a portrait of the intended victim; the subject later attacked the person depicted; when detectives identified a suspect by the late 1970s, multiple surviving witnesses declined to testify because doing so would have required publicly disclosing their sexuality — a disclosure that carried severe professional and personal consequences at the time; the case was formally reopened by the SFPD cold case unit in 2019, and investigators issued a public plea for witnesses. Research this profile using publicly available sources — including SFPD cold case archives, Bay Area newspaper archives, and published criminological literature — and identify the name or nickname by which this killer is known to law enforcement and in published accounts.