“A thousand angels of gold,” replied the ambassador, “and a post at the court of France, if you will fly thither when the deed is done.”

“By my troth, a tempting offer,” rejoined Nightgall. “But I am under great obligations to M. Simon Renard. He appointed me to my present place. It would appear ungrateful to kill him.”

“Pshaw!” exclaimed De Noailles, contemptuously. “You are not the man to let such idle scruples stand in the way of your fortune. Renard only promoted you because you were useful to him. And he would sacrifice you as readily, if it suited his purpose. He will serve you better dead than living.”

“It is a bargain,” replied Nightgall. “I have the keys of the subterranean passages, and can easily get out of the Tower when I have despatched him. Your excellency can fly with me if you think proper.”

“On no account,” rejoined De Noailles. “I must not appear in the matter. Come to me when the deed is done, and I will furnish you with means for your flight, and with a letter to the king of France, which shall ensure you your reward when you reach Paris. But it must be done quickly.”

“It shall be done to-morrow night,” replied Nightgall. “Fortunately, M. Renard has chosen for his lodgings the chamber in the Bloody Tower in which the two princes were murdered.”

“A fitting spot for his own slaughter,” remarked De Noailles, drily. “It is so, in more ways than one,” replied Nightgall; “for I can approach him unawares by a secret passage, through which, when all is over, escape will be easy.”

“Good!” exclaimed De Noailles, rubbing his hands gleefully. “I should like to be with you at the time. Mortdieu! how I hate that man. He has thwarted all my schemes. But I shall now have my revenge. Take this ring and this purse in earnest of what is to follow, and mind you strike home.”

“Fear nothing,” replied Nightgall, smiling grimly, and playing his dagger; “the blow shall not need to be repeated. Your excellency’s plan chimes well with a project of my own. There is a maiden whom I have long sought, but vainly, to make my bride. I will carry her off with me to France.”

“She will impede your flight,” observed De Noailles, hastily. “On all difficult occasions, women are sadly in the way.”