Mma Ramotswe found it difficult to imagine what it would be like to have no people. There were, she knew, those who had no others in this life, who had no uncles, or aunts, or distant cousins of any degree; people who were just themselves. Many white people were like that, for some unfathomable reason; they did not seem to want to have people and were happy to be just themselves. How lonely they must be—like spacemen deep in space, floating in the darkness, but without even that silver, unfurling cord that linked the astronauts to their little metal womb of oxygen and warmth. For a moment, she indulged the metaphor, and imagined the tiny white van in space, slowly spinning against a background of stars and she, Mma Ramotswe, of the No. 1 Ladies’ Space Agency, floating weightless, head over heels, tied to the tiny white van with a thin washing line.

SHE STOPPED at Francistown, and drank a cup of tea on the verandah of the hotel overlooking the railway line. A diesel train tugged at its burden of coaches, crowded with travellers from the north, and shunted off; a goods train, laden with copper from the mines of Zambia, stood idle, while its driver stood and talked with a railways official under a tree. A dog, exhausted by the heat, lame from a withered leg, limped past. A child, curious, nose streaming, peeped round a table at Mma Ramotswe, and then scuttled off giggling when she smiled at him.

Now came the border crossing, and the slow shuffling queue outside the white block in which the uniformed officials shuffled their cheaply printed forms and stamped passports and permissions, bored and officious at the same time. The formalities over, she set out on the last leg of the journey, past granite hills that faded into soft blue horizons, through an air that seemed cooler, higher, fresher than the oppressive heat of Francistown. And then into Bulawayo, into a town of wide streets and jacaranda trees, and shady verandahs. She had a place to stay here; the house of a friend who visited her from time to time in Gaborone, and there was a comfortable room awaiting her, with cold, polished red floors and a thatch roof that made the air within as quiet and as cool as the atmosphere in a cave.

“I am always happy to see you,” said her friend. “But why are you here?”

“To find somebody,” said Mma Ramotswe. “Or rather, to help somebody else to find somebody.”

“You’re talking in riddles,” laughed her friend.

“Well, let me explain,” said Mma Ramotswe. “I’m here to close a chapter.”