Philip Michael Zarba was 47 when he was last seen in San Rafael, California, on May 1, 1984, but was not reported missing until September 30, 1985. At the time he disappeared he was known to be struggling with cocaine addiction. He is described as 5 feet 10 inches, 180 pounds, with brown hair and brown eyes. Authorities list him as endangered missing and have his fingerprints and DNA on file.

There have been rumors suggesting he may have been murdered, but no evidence has surfaced to confirm that and the case remains unsolved with few known circumstances surrounding his disappearance. The San Rafael Police Department continues to investigate.

If anyone knew Philip, saw him around May 1, 1984, or has information that could help the investigation, please come forward.