6. On the Roof

Curly, Boysie, Grimblegrot and Professor Potter climb onto the flat roof of the Professor's house where the helicopter is waiting.

Boysie looks worried."Will this machine carry all three of us?" he asks.

"Of course," says Professor Potter. "This helicopter will carry you all easily. Climb in and you can set off."

Grimblegrot helps the two friends into the helicopter. Then he switches on the engine. "Up and away!" he cries as the helicopter takes off.