The arrangements made to prevent any future theft were substantial. The coffin was encased in two meters of concrete and placed beneath a concrete slab over the grave. The Swiss National Museum’s account describes this as the method used to secure the grave against further disturbance. Concrete encasement is not a standard burial practice; it was a specific security measure adopted in response to what had happened.
The practical effect of this encasement is that the grave at the Cimetière de Corsier-sur-Vevey is now physically protected in a way that the original oak coffin in its original earth grave was not. The concrete makes removal essentially impossible without machinery and significant time — conditions that would make any repetition of the 1978 theft both logistically impractical and impossible to conceal.
Oona Chaplin remained at the Manoir de Ban after the recovery. She had not paid the ransom, she had cooperated with the investigation, and the case had been resolved in a way that returned her husband’s remains and resulted in the prosecution of the men responsible. She continued to live in Corsier-sur-Vevey. She died there on September 27, 1991, of pancreatic cancer, at the age of sixty-six. She was buried beside her husband.
The grave that holds both of them at the Cimetière de Corsier-sur-Vevey is now a marked site on the village’s tourist circuit. The Manoir de Ban, the estate where the family lived for twenty-five years, was converted after Oona’s death and eventually opened to the public as Chaplin’s World in 2016 — a museum and cultural center devoted to Chaplin’s life and work, set in the building and grounds where he spent the last decades of his life.