She took Genevieve by the hand. “Come on. We’ll try and get up to Mother’s boudoir without anyone seeing us. She’s bound to go there eventually.”

They crept out into the courtyard and scuttled quickly along the foot of the manor’s wall to a small green door which led into a storeroom at the back of the kitchens. Louise expected a shouted challenge at any moment. She was panting by the time she heaved on the big iron handle and nipped inside.

The storeroom was filled with sacks of flour and vegetables piled high in various wooden bays. Two narrow window slits, set high in the wall, cast a paltry grey light through their cobweb-caked panes.

Louise flicked the switch as Genevieve closed the door. A couple of naked light spheres on the roof sputtered weakly, then went out.

“Damnation!” Louise took Genevieve’s hand and threaded her way carefully around the boxes and sacks.

The utility corridor beyond had plain white plaster walls and pale yellow flagstones. Light spheres every twenty feet along its ceiling were flickering on and off completely at random. The effect made Louise feel mildly giddy, as if the corridor were swaying about.

“What’s doing that?” Genevieve whispered fiercely.

“I’ve no idea,” she replied carefully. A dreadful ache of loneliness had stolen up on her without any warning. Cricklade didn’t belong to them anymore, she knew that now.

They made their way along the disconcerting corridor to the antechamber at the end. A cast-iron spiral staircase wound up through the ceiling.

Louise paused to hear if anyone was coming down. Then, satisfied they were still alone, she started up.

The manor’s main corridors were a vast contrast to the plain servant utilities.