Without much difficulty they crawled to the tower in question. Here they found another trap door, but it was tightly fastened and although they did their best they could not budge it.
“Stumped again,” grumbled Darry. “Did you ever see such luck?”
“I know what I’m going to do!” exclaimed Sam, suddenly. “I’m going to climb down on the vines. I am sure they are strong enough.”
“Just the thing! Why didn’t we think of it before.”
They ran over to the edge of the tower and began to test the vines. Then Sam let himself down a few feet and Darry did the same. Soon they were moving downward, slowly and cautiously.
“There goes that volante again!” cried Darry, presently. “But it didn’t have the captain in it.”
“Let us get away as quickly as we can,” came from Sam. “If we don’t we may run into more trouble.”
“Hi, you boys, come back here!” was the cry which reached their ears. “Come back, I say!”
In amazement, both looked up. There on the tower stood Captain Sudlip, shaking his fist at them!