They reached the empty gun-room. Cecil threw open the hidden door.
"Will you go first or last?" he said to the girl. "Choose your own place."
The girl laughed.
"The door seemed to open easily," she remarked, "considering that it has not been used for so long."
"Never mind about that," Cecil said sharply. "Are you coming with us?"
"I am coming," Kate answered composedly, "and I will walk last."
"As you please," Cecil answered. "Come, Forrest, you may as well see this thing through with me."
As they stumbled along the narrow way, Cecil whispered in Forrest's ear.
"What are we going to do with her?"
"God knows!" Forrest answered. "Do you suppose that any one knows where she is? Who is she?"