She reached behind her and jerked the cable that opened the engine’s compression valve so the pistons would move freely and allow the propellers to spin. The difference was immediate. The aeroplane felt lighter, more like a glider.

Now she could see the dairy pasture. Speckled with cows and crisscrossed with fences, it offered no room to come down safely. There was the house, an elaborate log mansion, and behind it the sloping lawn of mowed grass from which she had earlier taken to the air. But first she had to clear the house, and she was dropping fast. She threaded a path between the tall chimneys, skimmed the roof, and then coaxed the rudder to turn into the wind, taking great care not to slide into a spin.

Eight feet above the grass, she saw that she was moving too fast. Air squeezed between the wings and the ground had the effect of holding her up. The biplane was refusing to stop flying. Ahead loomed a wall of trees.

The gasoline that had soaked into the varnished canvas ignited in a sheet of orange flame.

Trailing fire, unable to slant her wings sharply to slow enough to touch her wheels to the grass, Josephine reached back and jerked the compression cable. Closing the valve locked the eight-foot propellers. They grabbed the air like two fists, and her wheels and skids banged hard on the grass.

The burning biplane slid for fifty yards. As it slowed, the fire spread, scattering flame. When she felt it singe the back of her helmet, Josephine jumped. She hit the ground and threw herself flat to let the machine roll past, then she sprang to her feet and ran for her life as flames engulfed it.

Harry’s butler came running. He was trailed by the gardener, the cook, and Harry’s bodyguards.

“Mrs. Frost! Are you all right?”

Josephine’s eyes locked on the pillar of flame and smoke. Marco’s beautiful machine was burning like a funeral pyre. Poor Marco. The steadiness that had gotten her through the ordeal was dissolving, and she felt her lips quiver. The fire looked like it was underwater. She realized that she was shaking and crying, and that tears were filling her eyes. She couldn’t tell if she was crying for Marco or herself.

“Mrs. Frost!” the butler repeated. “Are you all right?”

It was the closest by far she had ever come to getting killed in an aeroplane.

She tried to pull her handkerchief from her sleeve. She couldn’t get it out. She had to take her glove off. When she did, she saw her skin was dead white, as if her blood had gone into hiding. Everything was different. She now knew what it felt like to be afraid.

“Mrs. Frost?”

They were all staring at her. Like she had cheated death or was standing among them like a ghost.

“I’m O.K.”