Standing to her full height and directing her voice against the unfeeling walls, she sang their call:
“Whoo-hoo-hoo,
Whoo-hoo-hoo,
Whoo-hoo-hoo.”
The echoes of that call had died away and she was parting her lips for another when, of a sudden, her brother seized her arm.
“Hist! Listen!” he whispered.
Faint, indistinct, but unmistakable, there came the silent pit-pat of footsteps on the dust-padded corridor. Jean’s call had brought someone. But who?
CHAPTER XXII
MAGIC POWER
In strained silence the brother and sister stood listening, waiting in the dark. Roderick had snapped off the small pocket light which he carried.
The sounding footsteps in the distance became hesitant, uncertain.