Allan Terry Kaplan, 39, vanished from Boynton Beach, Florida, on December 8, 1977. He was seen earlier that evening at the Banana Boat Lounge in Boca Raton drinking with a woman, then left the bar alone and was later confirmed at his apartment. Evidence there suggested he had changed clothes after arriving home, but his wallet, watch, and other personal items were missing. His car remained at the residence and the apartment was unusually disheveled.

Kaplan had moved to Florida six months earlier and was a successful restaurateur who bought two Boca Raton restaurants and made them profitable. He was a father of two. Friends and family say his credit cards and bank accounts were never used and he made no contact after his disappearance; detectives speculated foul play but could not confirm it. The case remains unsolved.