"Hark!" All three girls uttered the exclamation simultaneously.

"It's at the other side!" whispered Cleo, "and it's a woman's voice."

They listened, scarcely breathing.

"That's Mary!" suddenly exclaimed Grace, in the same subdued voice. "I know it is."

They waited a few seconds, listening. The first voice was now answered by another. It was plainly that of the old woman Reda, for the queer, rapid flow of language was not English.

"Reda!" whispered Cleo. "Is that Spanish?"

"Who's Reda?" repeated Lalia.

"The queer old woman with the little girl Mary," replied Cleo. "Are you afraid of her?"

"No," answered Lalia with something of a sneer. "I guess we three could manage her if we had to. Shall we peek?"

"Listen!" commanded Cleo.