Camille Lawson arrived at nine in the morning with her braids still wet from the shower and a travel mug in her hand, ready to be angry about a missed phone call.

She got as far as the bedroom door.

She looked at her younger sister’s face for exactly one second, and the travel mug went down on the dresser so hard that coffee jumped out of it.

“Who,” Camille said, in a voice Darius had never heard from her in ten years of family dinners, “put their hands on my sister?”

“Camille.”

Nia’s voice was hoarse from the night.

“Camille, the babies are asleep.”

“I can see the babies are asleep. I can see my sister has been beaten in her own bed, too. Both things are true at the same time, Nia.”

Darius stood in the doorway of his own bedroom and understood that he had become a stranger in the room.

Camille sat on the bed and took Nia’s good hand, and then she turned her head and addressed Darius directly, and what she said rearranged the last six weeks of his life like furniture.

“Three weeks ago,” Camille said, “your wife called me at midnight. She was whispering because your mother was down the hall. She made me promise her something, and I am done keeping it a secret.”

“Camille, do not,” Nia said.

“I am keeping the promise, Nia. That is what I am doing. The promise was the point.”

She looked back at Darius.

“She said: if anything happens to me, take my babies. Take them to your house and do not give them back to this house. Those were her words. Three weeks ago. Before anybody laid a finger on her face. So you tell me, Darius, what your wife has been living inside, that a woman with six week old twins sits up at midnight making plans for who raises her children if she ends up unable to.”

The room was very quiet.

Micah slept on, oblivious, with his mouth open against his mother’s arm.

Darius heard himself ask what else there was.

He heard it as if somebody else had asked, somebody braver.

“Ask me to show you something instead,” Camille said. “Show him, Nia.”

“I cannot show him what is in his own house,” Nia said. “He lives here.”

“Then he has been walking past it with his eyes shut, like the rest of us nearly did.”

Camille stood up and walked out of the bedroom, and Darius, after one look at his wife, followed her down the corridor to the wing of the house that belonged to his mother.

The door to the spare room at the end of Evelyn’s wing had been closed for as long as Darius could remember.

Camille opened it without knocking, the way you open a door you have already seen behind.

The room inside was finished.

Two cribs stood side by side along the wall, made up with bedding, one side blue and one side pink.

The walls had been painted a soft, careful yellow.

Shelves ran along the far wall, stocked in rows: folded blankets, stacks of tiny clothes in two colours, tins and bottles and packets, everything counted and faced forward like a shop.

A rocking chair stood in the corner with a cushion on the seat and a folded shawl across its back.

On the dresser, in a small silver frame, stood a photograph of Evelyn holding Micah at the hospital, still in the blanket from the delivery ward.

Darius stood in the doorway of the room and could not make his feet move.

“When was this done?” he asked.

“Ask her,” Camille said. “Ask her when she painted it. My sister says the smell of paint was in this corridor before the twins were born. Before they were born, Darius. She used to stand in this corridor smelling paint and telling herself she was imagining things.”

He found his mother in the kitchen, calmly washing the breakfast dishes, her sleeves pushed up, the heavy gold ring with the green stone taken off and set by the tap, the way she always set it when her hands were in water.

“Mama.”

She did not turn around.

“There is a nursery in your wing,” he said. “Two cribs. Painted walls. Shelves stocked. When did you do all that?”

“A grandmother prepares,” Evelyn said, and turned off the tap, and dried her hands one finger at a time. “I prepared because somebody in this house had to think ahead, Darius. I prepared because I knew that girl would fail those babies, and when she did, they would need somewhere proper to go.”

“You knew.”