When I left the baron's house, I found, to my surprise, that my carriage had gone.

"You can't even keep in touch with your own servants, it seems, when you want them, to say nothing of guarding the Countess Minna," sneered von Nauheim.

"Apparently not," I answered; but my momentary chagrin was merged the next instant in the thought that this was probably no accident. I remembered that von Nauheim had left the room once for a few minutes, and I read the incident as a danger-signal.

"We'd better have a cab called," he added, and he sent a servant out for one.

When the man returned with one, my companion said:

"Come along, Prince, we've no time to lose."

For a moment I hung back, but, reflecting that I had better not even yet show my hand, I followed him.

The man drove off slowly at first, and as the vehicle lumbered heavily along I felt in my pocket to make sure my revolver was ready for use in need. Von Nauheim was obviously nervous. At first he whistled and drummed with his fingers on the window, and peered out into the streets. It was a dark night, and the driver had left the main road and was taking us through some narrow and ill-lighted streets, and was driving much more quickly.

"Where's the idiot taking us?" exclaimed von Nauheim, assuming a tone of anger. "Doesn't the dolt know his way?"

"He shouldn't have left the main street, should he?" I asked unconcernedly. "Tell him which way to drive. I don't know it."