Sheriff to update search for Hilton Head couple

More than nine months after a prominent Hilton Head Island couple vanished, the local sheriff is briefing reporters on progress in the case.
   
Beaufort County Sheriff P.J. Tanner scheduled a Wednesday news conference to discuss the investigation into the disappearance of John and Elizabeth Calvert.
   
The couple was last seen on March 3 and their Mercedes was found three days later in a parking lot on Hilton Head.
   
Authorities say the accountant who kept the books for the couple, Dennis Gerwing, committed suicide after being questioned in the case.
   
An employer said Gerwing had embezzled $2.1 million from the couple and seven other companies.
   
No trace has been found of the Calverts and Tanner has likened the case to trying to find a needle in a 700-pound bale of hay.