Then, after aeons of climbing, there came a cough from the darkness above; and matters assumed a very grave and unexpected turn. It was clear that a ghast, or perhaps even more, had strayed into that tower before the coming of Carter and his guides; and it was equally clear that this peril was very close. After a breathless second the leading ghoul pushed Carter to the wall and arranged his kinfolk in the best possible way, with the old slate tombstone raised for a crushing blow whenever the enemy might come in sight. Ghouls can see in the dark, so the party was not as badly off as Carter would have been alone. In another moment the clatter of hooves revealed the downward hopping of at least one beast, and the slab-bearing ghouls poised their weapon for a desperate blow. Presently two yellowish-red eyes flashed into view, and the panting of the ghast became audible above its clattering. As it hopped down to the step above the ghouls, they wielded the ancient gravestone with prodigious force, so that there was only a wheeze and a choking before the victim collapsed in a noxious heap. There seemed to be only this one animal, and after a moment of listening the ghouls tapped Carter as a signal to proceed again. As before, they were obliged to aid him; and he was glad to leave that place of carnage where the ghast's uncouth remains sprawled invisible in the blackness.