“Take this lanthorn, then,” said the chief agent with a snarl directed at the sleeping concierge, “and come along. Why are you still here?” he added, as if in after-thought.

“The citizen concierge was not satisfied with the way I had done his boots,” muttered the man, with an evil leer as he spat contemptuously on the floor; “an aristo, quoi? A hell of a place this... twenty cells to sweep out every day... and boots to clean for every aristo of a concierge or warder who demands it.... Is that work for a free born patriot, I ask?”

“Well, if you are not satisfied, citoyen Dupont,” retorted Heron dryly, “you may go when you like, you know there are plenty of others ready to do your work...”

“Nineteen hours a day, and nineteen sous by way of payment.... I have had fourteen days of this convict work...”

He continued to mutter under his breath, whilst Heron, paying no further heed to him, turned abruptly towards a group of soldiers stationed outside.

“En avant, corporal!” he said; “bring four men with you... we go up to the tower.”

The small procession was formed. On ahead the lanthorn-bearer, with arched spine and shaking knees, dragging shuffling footsteps along the corridor, then the corporal with two of his soldiers, then Heron closely followed by de Batz, and finally two more soldiers bringing up the rear.

Heron had given the bunch of keys to the man Dupont. The latter, on ahead, holding the lanthorn aloft, opened one gate after another. At each gate he waited for the little procession to file through, then he re-locked the gate and passed on.

Up two or three flights of winding stairs set in the solid stone, and the final heavy door was reached.

De Batz was meditating. Heron’s precautions for the safe-guarding of the most precious life in Europe were more complete than he had anticipated. What lavish liberality would be required! what superhuman ingenuity and boundless courage in order to break down all the barriers that had been set up round that young life that flickered inside this grim tower!