“There is a submarine base here.”

Thus Lord Hastings questioned the girl at length and she answered quietly and comprehensively. The conversation continued for more than an hour. Lord Hastings, Jack and Frank storing what the girl told them in their memories for future use.

“And now,” said Lord Hastings, “for the final question.”

Marie Dulcé smiled.

“I’m ready,” she said.

“Is there any way in which you can procure for me a map of the fortress itself, including all its details?”

For a brief moment the girl was silent. Then she sprang to her feet, her eyes once again flashing.

“I can and I will!” she cried determinedly. “You shall have the paper to-morrow night before eight o’clock.”

CHAPTER V.
THAT NIGHT.

The conversation having come to this point, Lord Hastings considered further words useless. He was deeply impressed by the bearing of the young French girl and he had no doubt that she would do what she said—or, at least, that it would not be her fault if she failed; nor, for that matter, had Frank or Jack.