John and Elizabeth Calvert were last seen on July 31 , 2008 . They couple lived on board their yacht at Hilton Head Island . They were growing suspicious of their accountant ; set up a meeting . Have information ? Call ( 843 ) 524 - 7 . In reconstructing the Calverts ' last days , investigators concluded that Gerwing was worth a deeper look . A $ 500 reward is offered .
John and Elizabeth Calvert were last seen on July 31 , 2008 . They couple lived on board their yacht at Hilton Head Island . They were growing suspicious of their accountant ; set up a meeting . Have information ? Call ( 843 ) 524 - 7 . A $ 500 reward is offered .