Joseph Rybak was 45 when he was last seen in Sunrise, Florida, on December 28, 1979. His disappearance was sudden and left few clues; contemporaneous investigations produced no significant breakthroughs and the case eventually went cold.

There is little public information about the circumstances leading up to his vanishing, and family and friends have not had closure. Authorities have expressed hope that someone with information might come forward to explain what happened to Joseph Rybak.

If anyone knew Joseph, remembers seeing him in Sunrise around that date, or has information that could help, please share what you know with investigators.