Luke nodded and disappeared. He went towards the shed, keeping a sharp look-out for the gardener. He saw him in the distance, taking off his coat to do a bit of work. He hung it on a nail outside one of the greenhouses. He caught sight of Luke and yelled at him.

"Now then, lazy! Have you finished that bed yet? I want you to come and tie up some tomatoes."

Luke shouted something back and went into the bushes nearby. He watched Mr. Tupping walk off to the kitchen-garden, unravelling some raffia as he went. The gardener disappeared through a green door let into the wall that ran round the kitchen-garden.

Then Luke did a very brave thing. He ran swiftly and quietly to Mr. Tupping's coat. He slipped his hand into the outer pocket, took the key of the little shed, and raced off with it He unlocked the shed, and Buster rushed out. Luke tried to catch him in order to bundle him over the wall, but Buster escaped him and tore off down a path.

Luke locked the door quickly, ran back to the gardener's coat and slipped the key back into the pocket. Then he went to join Mr. Tupping in the kitchen-garden, hoping to goodness that Buster had had the sense to shoot off down the drive.

But Buster had lost his way. He suddenly appeared in the kitchen-garden and gave a yap of joy when he saw Luke. Mr. Tupping looked up at once.

"That dog!" he said in astonishment and anger. "Blessed if it isn't that dog again! How did he get out of the shed? Didn't I lock that door? And isn't the key in my pocket?"

"I saw you lock the door, sir," said Luke. "Perhaps it's a different dog."

Mr. Tupping waved his arms wildly and yelled at Buster. Buster gambolled into the kitchen-garden and ran right across a bed of carrots. Luke felt certain the little dog did it on purpose. Tupping went purple in the face.

"You get out!" he yelled, and threw a big stone at Buster. Buster yelped, and began to dig hard in the middle of the carrots, sending roots flying into the air.