She stayed in the car.
It was her decision and she made it clearly. "This is your conversation first," she told Adrian. "Go. I'll wait."
He looked at her for a moment with an expression she was starting to be able to read, the slight tension around the eyes that meant he was weighing whether to push back. He decided against it. He got out and walked into his house without looking back and she watched the door close behind him.
The driver sat quietly in the front and she appreciated that he understood his job was to be invisible.
She sat with the slip of paper in her hand. Emeka Okonkwo. OA-7741. Quarterly payments for twenty-something years. She tried to build a picture of what the agreement might have been — what a young man in 1974 could have offered that was worth that kind of sustained, secret payment. An introduction. A favour. Land, access, silence about something that happened. There were a thousand possibilities and all of them were the kind of thing a family spent decades hiding.
She thought about Adrian growing up in that house. Learning the business from a man who had been conducting a secret arrangement his entire adult life. She thought about what it did to a person, being shaped by someone like that without knowing it. Whether it left marks you couldn't see from the outside.
She thought about her own mother and the particular quality of Evelyn's silence and wondered, not for the first time, whether silence was ever actually protection or whether it was just a different kind of damage with a longer fuse.
Twenty minutes passed. Then thirty.
At thirty-five minutes the front door opened and Adrian came out alone. He walked to the car and got in the back beside her and for a moment he just sat there with his hands loose in his lap and his eyes on the middle distance and she let him have it.
"He didn't deny it," he said finally.
"What did he say."
"He said it was a different time. He said the agreement was necessary and that no one was hurt by it and that I would understand when I had more context." His voice was level but she could hear what was underneath it, the particular flatness of someone managing something large. "He told me to walk away from the clause and the marriage and let him handle Raymond. He said if I registered the marriage today and the letter opened, it would destroy the family."
"Did he say what's in the letter."
"No. He said that was exactly the point — that it never gets opened." He turned to look at her. "He asked me to trust him."
She waited.
"He's never asked me that before," Adrian said. "In my entire life he has never once asked me to trust him. He gave instructions. He set expectations. He didn't ask." He looked back at the house. "Which tells me whatever is in that letter is the worst thing he has ever done."
"Did you tell him you know about the payments."
"Yes."
"How did he react."
"He asked who told me." Adrian paused. "And then he asked about you. Whether you knew. Whether you understood what you were stepping into." His jaw tightened. "He said you were a girl who didn't know her own family's history and that you were going to be the instrument of something you didn't understand."
The phrasing landed with a specific weight. A girl who didn't know her own family's history.
"He knows something about my mother," Diane said.
"I think he knows something about your grandfather." Adrian met her eyes. "I think the agreement in 1974 wasn't just between two business partners. I think someone did something and someone else agreed to stay quiet about it. And the payments were the price of that silence."
"And O.A. — your father's initials in the agreement."
"His full name is Obiajulu Emeka Okonkwo," Adrian said. "O.A. — Obiajulu Adaeze. His mother's maiden name was Adaeze. He used to sign documents that way when he was young." He looked at her. "My grandfather knew exactly who he was naming in that codicil. He was naming my father by the name his own mother called him."
It was intimate in a way that felt almost cruel, using a childhood name in a document designed to expose a secret decades later.
"We still have fourteen hours," she said.
"Yes."
"Then let's go register the marriage." She said it quietly and completely. "And then we find out what your grandfather knew about mine."
He looked at her. Something passed through his face that she didn't have a name for yet. Something that had nothing to do with clauses or board seats or sealed letters.
"Alright," he said.
The car pulled away from the house. Diane did not look at the building as they left but she was aware, somewhere at the edge of her attention, of a figure standing at the upstairs window. Chief Emeka, watching them go.
Her phone buzzed. A number she didn't know. She answered on instinct.
"You're making a mistake." A man's voice, older, accented with something she couldn't place. "The letter should never be opened. There are things your mother died without telling you for a reason." A pause. "Ask Adrian who Adaeze was. Ask him what happened to her. Then decide if you still want that letter opened."
The call ended.
She lowered the phone slowly. Beside her, Adrian was looking out the window, unaware.
She did not ask him. Not yet. She needed to think first. She needed to understand the shape of the question before she asked it, because something in the man's voice had told her this was not a threat.
It was a warning from someone who already knew how the story ended.