"When the Sleeper wakes--_When_!" He turned his eyes full of merriment along the passage.

His face changed, the whole man changed, became rigid.

The other two turned swiftly at his exclamation and stood motionless.

Their faces assumed an expression of consternation, an expression that deepened into awe.
Suddenly Graham's knees bent beneath him, his arm against the pillar collapsed limply, he staggered forward and fell upon his face..