Pilescu muttered something under his breath and ran to where the mechanics had just finished refuelling the plane. He pushed them away and made sure nobody was still nearby. Ranni went up the steps in a trice, and tipped the inquisitive man down them. Pilescu leapt into the plane and slipped into the pilot’s seat like a fish sliding into water.

There was a good deal of shouting and calling, but Pilescu ignored it. He started the plane and it ran swiftly over the ground. With a crowd of angry men rushing after it, the plane taxied to the end of the field and then rose gently into the air. Pilescu gave a short laugh.

“Now it will be known everywhere that we have the children on board. Get them out, Ranni. They were very good and they must be half smothered under those rugs.”

The five children were already crawling out, excited to think of their narrow escape.

“Would we have been sent back to London?” cried Paul.

“I peeped out but the man didn’t see me!” shouted Mike.

“Are we safe?” said Peggy, sitting down in her comfortable armchair seat again. “They won’t send up planes to chase us, will they?”

“It wouldn’t be any use,” said Ranni, with a grin. “This is the fastest plane on the airfield. No — don’t worry. You are all right now. But we must try to find the place where the White Swallow came down, for we do not want to land on any more airfields at the moment.”

The day went on, and the children found it very thrilling to look out of the windows and see the mountains, rivers, valleys and plains slipping away below them. They longed to go down and explore them. It was wonderful to be over a strange land, and see it spread out below like a great map.

Towards the late afternoon, as the children were eating sweet biscuits and chocolate, and drinking lemonade, which by some miracle Ranni had iced, Pilescu gave a shout.