"There!" exclaimed the major finally. "I've covered a square. It opens from the other side. Tom, here with your ax!"

Dorothy and Tavia had heard every word. Now they stopped their ears. It was too dreadful.

Blow after blow fell on the heavy woodwork.

Chop! Chop! Chop!

But not a word was spoken.

Then the sound of splintered wood.

The panel was falling in.

"Careful!" cautioned Major Dale.

"There she goes!"

Another scream!