John Henry Duffin, 68, was murdered in San Diego on March 12, 1988, while visiting the city with his wife. After dropping friends at a restaurant, Duffin left to park their car about two blocks away and failed to return. His wife and companions later found him with police and paramedics; he had been brutally beaten and robbed of his wallet and credit cards.

Investigators reported two suspects: a heavy-set Black male about 6 feet 6 inches to 6 feet 8 inches tall, and a thin Black male with a scraggly beard. They were believed to be driving a black 1974–1977 Chevrolet Monte Carlo, Buick Regal, or Oldsmobile Cutlass. The San Diego Police Department lists the case as a cold case and is seeking information that could identify and arrest those responsible.

If anyone knew Duffin, saw two men matching these descriptions, or recalls a black 1970s-era Monte Carlo, Regal, or Cutlass in the area that night, please contact the San Diego Police Department or Crime Stoppers.