"Well," answered the Cimmerian cautiously, "whatever it is that takes a man from a sleeping-dais and leaves only a spot of blood."

"You have seen? You have seen?" The man was shaking like a leaf; his voice cracked on the high-pitched note.

"Only a man sleeping on a dais, and a shadow that engulfed him," answered Conan.

The effect of his words on the other was horrifying. With an awful scream the man turned and rushed from the chamber. In his blind haste he caromed from the side of the door, righted himself, and fled through the adjoining chambers, still screaming at the top of his voice. Amazed, Conan stared after him, the girl trembling as she clutched the giant's arm. They could no longer see the flying figure, but they still heard his frightful screams, dwindling in the distance, and echoing as from vaulted roofs. Suddenly one cry, louder than the others, rose and broke short, followed by blank silence.

"Crom!"

Conan wiped the perspiration from his forehead with a hand that was not entirely steady.

"Surely this is a city of the mad! Let's get out of here, before we meet other madmen!"

"It is all a nightmare!" whimpered Natala. "We are dead and damned! We died out on the desert and are in hell! We are disembodied spirits — ow!" Her yelp was induced by a resounding spank from Conan's open hand.

"You're no spirit when a pat makes you yell like that," he commented, with the grim humor which frequently manifested itself at inopportune times. "We are alive, though we may not be if we loiter in this devil-haunted pile. Come!"

They had traversed but a single chamber when again they stopped short. Some one or something was approaching. They faced the doorway whence the sounds came, waiting for they knew not what. Conan's nostrils widened, and his eyes narrowed. He caught the faint scent of the perfume he had noticed earlier in the night. A figure framed itself in the doorway. Conan swore under his breath; Natala's red lips opened wide.