A letter in the file revealed that Lang had returned to the country in the early eighties and worked briefly for a private security company. That company had been contracted by the Caldwell Museum during a major renovation. The connection was circumstantial, but it suggested that Lang might have known where the diamond went.
Daniel contacted the security company, which had since been absorbed into a larger firm. After several calls, a former manager confirmed that Lang had retired to a coastal town and was still alive. He was in his eighties and lived alone, but he had recently granted an interview to a local newspaper about his career in private transport.
"We should speak to him," Margaret said.
"Carefully," Daniel replied. "He may be a witness, but we cannot assume he will remember the delivery accurately. We also cannot pressure him into making a statement."
The group drove to the coastal town the following morning. Peter Lang lived in a modest house overlooking a small harbor. His garden was neatly maintained, and a collection of model ships filled the front window. When Daniel explained the reason for their visit, Lang's expression changed. He did not invite them inside immediately. Instead, he asked whether Richard Caldwell had sent them.
"No," Margaret replied. "We are trying to find out what happened to a diamond that belonged to my father."
Lang looked at her for a long time. Then he opened the door.
Inside, he listened as Margaret described Daniel Ellis, the workshop fire, and the documents that had recently been discovered. She did not accuse Lang of wrongdoing. She simply explained that his name appeared in the surviving records of Bellweather Transport and that a delivery made in 1972 might be connected to the disappearance of the Star of Aurelia.
Lang stared at the floor. "I was told never to discuss that delivery," he said. "I was young enough to believe that following orders meant I was doing my job. I was not told what the package contained. I was told only that it was valuable and that the recipient expected it to arrive without a record that could be traced easily."
"Who gave you the instructions?" Daniel asked.
Lang shook his head. "A man who worked for a solicitor. He brought the paperwork to the depot and paid the additional fee in cash. The order came from Bellweather's management, but the man who collected the package at the destination was not the person named on the delivery sheet."
"Can you remember his name?" Margaret asked.
Lang closed his eyes. "I remember the face. He was tall, wore a dark coat, and had a ring with a black stone. I saw him at the Caldwell Museum years later. He was there during a private event, speaking to Richard Caldwell. I did not know who he was until I saw his photograph in the newspaper."
Evelyn showed him the photograph of Henry Ashford and the unidentified man who had stood beside Daniel Ellis and Arthur Harrington in 1946. Lang studied it carefully. He shook his head at Henry Ashford, then pointed to the other man.
"That is him," he said. "I remember the ring. He signed the receipt for the package."
Dr. Morris had previously suggested that the ring might bear the Ashford family crest. Lang's identification raised the possibility that the man was Henry Ashford's associate, but it did not establish his identity.
"Did you ever learn his name?" Daniel asked.
Lang hesitated. "Not until years later. I saw it on an internal report at the security company. His name was Martin Vale. He worked as a private adviser to several wealthy collectors and had a reputation for resolving ownership disputes quietly. Some people called him a fixer."
Margaret felt a cold weight settle in her stomach. The man who had taken the diamond might have been neither a member of the Harrington family nor a Caldwell. He was someone who operated between wealthy families, moving property and documents in ways that left little trace.
Lang agreed to provide a signed statement, but he warned them that he had never seen the diamond itself. He had delivered a sealed case and watched Martin Vale sign a receipt. He could confirm the circumstances of the delivery, not the contents of the package.
Before they left, Lang brought out an old notebook in which he had recorded several unusual deliveries during his final years at Bellweather. He had kept it because he suspected that some assignments were not legitimate. One entry, dated September 1972, referred to the Caldwell transfer. Beside the entry he had written: Recipient changed at destination. Instructions from Vale. No duplicate receipt.
Daniel photographed the page and arranged for an independent witness to certify the statement.
On the drive back, Victoria searched the Harrington records for Martin Vale. She found several references to a legal adviser with the same name, who had worked for Arthur Harrington during the final years of his life. Vale had also served as a consultant to the Voss Foundation and later advised the Caldwell Museum on private acquisitions.
"He was connected to all three families," Victoria said. "He could have coordinated the transfer and made sure the records disappeared."
"But why would he keep the diamond?" Evelyn asked. "If he was paid to move it, he might simply have delivered it to another collector."
Daniel agreed. "We need to find out what happened after the package reached him. The original diamond may have changed hands several times. Martin Vale could have been an intermediary rather than the final beneficiary."
They returned to Daniel's office and examined the newly recovered records. A search of historical property registers revealed that Martin Vale had purchased a small country estate in 1973. The property included a private vault and several storage buildings. Vale had sold the estate before his death, but the sale records mentioned an inventory of valuables that had been transferred to a family trust.
That trust was still active.
Its current trustee was a retired judge named Andrew Vale, Martin's son.
Daniel prepared a formal inquiry requesting the preservation of any documents or objects connected to the Star of Aurelia. Before he could send it, a message arrived from an unknown number. It contained a photograph of the old warehouse where Arthur Harrington's statement had been found. Someone had circled the envelope they had recovered and written a short warning across the image.
Stop searching for the original diamond. You have no idea what it cost the people who protected it.
Margaret read the message twice. She was frightened, but beneath the fear she felt something stronger: certainty that they were finally approaching the heart of the mystery.
The warning meant someone knew what they had discovered. It also meant the missing diamond might still exist.
And if Martin Vale had passed it to his son, the final link in the chain could be closer than they had imagined.
Andrew Vale lived in a large but understated house surrounded by mature trees and carefully maintained gardens. He had retired from the judiciary several years earlier and now served as trustee for the estate his father had left behind. Daniel Foster arranged a formal meeting, explaining that the request concerned a historical ownership dispute and that the family was not being accused of wrongdoing. Andrew agreed to meet them, but he insisted that no recording devices be used and that all questions be submitted in writing beforehand.
Margaret found the condition strange but accepted it. She had learned that wealthy families often protected their privacy as carefully as they protected their property. When they arrived, Andrew greeted them politely and led them into a study lined with books. He was in his late sixties, with silver hair and a reserved manner. A framed photograph of Martin Vale stood on the mantelpiece beside a collection of antique clocks.
"I understand you are investigating a diamond that may have passed through my father's hands," Andrew began. "I have reviewed your letter. My father was a private adviser to several collectors, but I have no knowledge of any stolen property in his possession."
Daniel explained the evidence recovered so far: the original workshop records, Arthur Harrington's confession, Eleanor Caldwell's letter, the Bellweather delivery entry, and Peter Lang's statement identifying Martin Vale as the person who accepted the package in 1972.
Andrew listened without interrupting. When Daniel finished, he folded his hands on the desk.
"My father handled thousands of transactions during his career. He often held objects temporarily while ownership questions were resolved. It would be unreasonable to assume that every item he handled was connected to a crime."
"We are not making that assumption," Daniel replied. "We are asking whether your father's records contain any information about a blue diamond transferred from the Caldwell residence in September 1972."
Andrew's expression remained composed. "The estate records are extensive. Some documents are held by our family trust, while others were transferred to professional archives. I cannot provide access to private papers without a proper legal basis."