famous five summary(chapter 9)

The five got a box out of a wreck and tried to open it but they can't. They tried to drop it from the top floor of the house. This made uncle Quentin furious because of the noise they made when they dropped the box. Then uncle Quentin took the box with him. The four children thought they needed to get that box. So that afternoon Julian crept in his study and goto the box. They managed to open it by using George's pocket knife by scraping all the rust away. This made the box open. They found a diary in it. The diary showed a map of Kirrin castle's dungeons. It actually showed where hundreds of ingots were.