Timeline of major events related to the disappearance of John and Elizabeth Calvert

• 5:30 p.m. March 3: John and Elizabeth Calvert are seen leaving their yacht in the Harbour Town Yacht Basin. They were heading to a meeting with their former business associate, Dennis Gerwing.

• Morning of March 4: The Calverts both miss business obligations.

• Evening of March 4: Elizabeth Calvert’s only sibling, David White of Decatur, Ga., files a missing persons report with the Beaufort County Sheriff’s Office.

• March 5: Police search the Calverts’ yacht, the “Yellow Jacket,” moored in its Harbour Town slip. Authorities in Georgia search the couple’s home in an upscale Atlanta neighborhood.

• March 6: Several new agencies join the hunt, including the FBI, the S.C. Law Enforcement Division and the sheriff’s office in DeKalb County, Ga.

• 3 a.m. March 7: The Calverts’ 2006 Mercedes Benz E320 is found in the parking lot of Marriott Resort & Spa, about six miles from Harbour Town in Palmetto Dunes. Deputies had been searching every parking lot on the island.

• March 8: A dive team searches the waters of Harbour Town, but finds nothing. Police execute search warrants for Gerwing’s office, his home in Hilton Head Plantation and his two vehicles.

• March 10: SLED brings in more agents to help in the investigation.

• Between 5 a.m. and 9 a.m. March 11: Dennis Gerwing commits suicide in a Sea Pines timeshare he had stayed in since his home was searched the weekend before.

• 3 p.m. March 11: Authorities publicly call Dennis Gerwing a “person of interest” in the Calverts’ case and say he isn’t cooperating because he retained a lawyer after four or five hours of questioning.

• 4 p.m. March 11: Two attorneys and Gerwing’s boss, Mark King, call 911 when no one answers the locked bathroom door in Gerwing’s condominium. Police respond and find Gerwing’s body in the bathroom.

• 7:30 p.m. March 11: Friends of the Calverts gather in the rain beneath a large oak in Harbour Town during a prayer vigil.

• March 13: Cadaver-sniffing dogs are used to search every storage facility on Hilton Head Island.

• March 14: A wooded area near Mitchelville Beach Park is searched. The Club Group, a property management firm where Gerwing worked until his death, hires a national forensic auditing company to examine its books.

• March 15, 17 and 18: Detectives scour a Georgia landfill some 100 miles southwest of Hilton Head with cadaver-sniffing dogs looking for the couple. A landfill spokesman said authorities converged on the landfill after determining trash from a specific Sea Pines trash bin was taken there.

• March 21 and 24: Deputies, state police reserve officers, wildlife officers and private security guards search the Sea Pines Forest Preserve.

• March 26: Beaufort County Sheriff P.J. Tanner releases information about Gerwing’s death after those who knew him questioned whether he really killed himself.