John and Elizabeth Calvert, prominent residents with homes in Atlanta and a yacht docked at Harbour Town marina, were last seen on the evening of March 3, 2008, entering a meeting with their accountant, Dennis Gerwing, on Hilton Head Island. Both missed appointments the next day and had their cell phones turned off, out of character for the disciplined couple.

Investigators focused on Gerwing after learning the Calverts had planned to confront him about suspected embezzlement. Gerwing gave inconsistent statements, had an unexplained cut on his hand and, hours before the meeting, bought three heavy drop cloths. He was found dead by suicide on March 11, 2008, and left notes admitting to embezzling roughly $2.1 million, but he did not confirm or deny any role in the Calverts’ disappearance.

Authorities believe the couple were likely killed or subdued in Gerwing’s office and their bodies moved to a remote location; extensive searches, including of a Georgia landfill, turned up nothing. The Calverts were declared legally dead in November 2009. Does anyone have information about the Calverts’ last known movements or that 11-hour window when Gerwing’s whereabouts were unknown?