He held out the dagger that Erik had heard described with infinite care all his life. The dagger was iron. Old iron. Sky iron. Hammered with stone in the pagan Northlands, from a fallen thunderbolt. The hilt was shaped into a dragon head?the detail lost in the blurring of hundreds of years of use.

It still drew blood for the blood-oath like new steel did. "Blood for blood. Clan for clan." Erik renewed the oath calmly.

After binding their wounds himself, Charles Fredrik took Erik by the elbow and led him across to a window. The window was a mere arrow-slit, testimony to the palace's ancient origins. Against modern cannon, such fortifications were almost useless. But… there was a certain undeniable, massive dignity to the huge edifice.

There they stood, silent for some time, looking out at the scattered shawl of lights which was the great sleeping city of Mainz. Erik was quite sure that those lights represented more people than lived in all Iceland. Their lives, and those of many more, rested in the hands of the old man standing next to him.

The Emperor seemed to have read his thoughts. "It is a great load, at times," he said softly.

His heavy jaws tightened. The next words were spoken almost harshly. "I have called for the Clann Harald because my heirs have need. My son is… very sickly. And I do not expect my only surviving brother to outlive me. Not with his wounds. So I must take special care to watch over my two nephews, for it is quite likely that one of them will succeed to the throne after I am gone."

The Emperor sighed. "Your older brother Olaf watched over my nephew Conrad for his bond-time, as your father Hakkon watched over me." A slight smile came to his face. "To my surprise, I find I miss him. He used to beat me, you know."

"He has told me about it, Godar of the Hohenstauffen." Erik did not add: Often.

Charles Fredrik's smile broadened. "According to your brother Olaf?'often.' " He chuckled. "It did me the world of good, I eventually came to realize. Nobody had dared punish me before that. Do you know that your family are the only people in the world who don't call me 'Emperor,' or 'Your Imperial Highness?' I think it is why we trust you."