NEW YORK ( CNN ) -- John and Elizabeth Calvert enjoyed the good life on Hilton Head Island in South Carolina , friends said , but they were growing more and more suspicious of the way their business books were being handled . Things were n't adding up . Money appeared to be missing . John and Elizabeth Calvert are featured on missing persons posters on Hilton Head Island , South Carolina . So they scheduled a meeting with accountant Dennis Ray Gerwing to address their concerns , recalled one close friend , Nancy Cappelmann . The Calverts said they were meeting with Gerwing at his offices in the upscale resort community at 6 p.m. last March 3 , she added . It would be the last time anyone would see or hear from the couple . The Calverts lived part-time on their yacht , docked at the island 's Harbor Town Yacht Basin , the same marina where they managed boat slips . They spent the rest of the year in Savannah , Georgia , and also had a home in Atlanta . They were an active , affluent couple in their mid-40s , and their absence was quickly noticed . On the evening of March 3 , 2008 , the evening they were to meet with their accountant , both of the Calverts ' phones were turned off . Family members said it was very unusual for either John or Elizabeth Calvert to shut off their cell phones . Watch an update on the case » . Family and friends called police and reported the Calverts missing on March 4 , after they missed appointments and still could n't be reached . `` I was supposed to meet John that night and he is never late , so when 20 minutes went by , I got worried and called his cell , but it went straight to voicemail , like it was turned off , '' Cappelmann said . She was a good friend of the couple 's and worked at one of their harbor businesses . Police and search teams scoured the island . Divers and dogs searched the harbor and found nothing . The Calverts ' small airplane was still at the island 's airport and provided no clues . Their 2006 Mercedes Benz was found parked at a hotel in Palmetto Dunes , a gated community six miles from where the Calverts ' yacht was docked . The Mercedes also contained no forensic clues . In reconstructing the Calverts ' last days , investigators concluded that Gerwing was worth a deeper look . They now say they believe the 54-year-old accountant was the last person to see the Calverts alive . Gerwing ran the management company that kept the books on the Calverts ' four businesses on Hilton Head Island . Authorities were already looking into possible financial improprieties involving the company , The Club Group . They named Gerwing as a person of interest in the case about a week after the couple disappeared . An internal audit later revealed that Gerwing had embezzled $ 2.1 million from the Calverts and others , police said . Gerwing committed suicide within hours of learning he was a person of interest , slashing his neck and legs with a steak knife , authorities said . He also left behind suicide notes with vague references to the Calvert case , said Beaufort County Sheriff P.J . Tanner . Tanner said the notes indicated some acknowledgement of responsibility for his actions , but did n't say specifically what those actions might have been . Police also gathered circumstantial evidence that seemed to point to Gerwing , including drop cloths large enough to use to wrap bodies and latex gloves purchased on the day the Calverts disappeared . In addition , police learned that Gerwing 's cell phone had been turned off for 12 hours after he was scheduled to meet with the Calverts . If Gerwing were alive , Tanner said , police would n't have enough corroborating evidence to name him a suspect and arrest him . Police executed search warrants on Gerwing 's office , home and vehicles and found soil in Gerwing 's kitchen . Investigators hope analysis of the dirt might provide clues to the origin of the dirt and a new location to continue searching for John and Elizabeth Calvert . Friends and family are offering a $ 65,000 reward for information leading to the arrest of the person or persons responsible for the Calverts ' disappearance . Police urge anyone with information about John and Elizabeth Calvert to call the tip line at ( 843 ) 524-2777 . Police also are seeking help from anyone who saw the Calverts ' 2006 Mercedes Benz E320 , Georgia Tech license plate GT821B on or about March 3 , 2008 .
Elizabeth Calvert and John were last seen on about a week . They couple lived on board their yacht at Harbor Town Yacht Basin . They were growing suspicious of their accountant ; set up a meeting . Have information ? Call ( one ) 524-2777 . A $ 65,000 reward is offered .