Peeping through the crack, the girls saw only an empty and very untidy sitting room. Becoming bolder, Doris opened the door wider and they stepped inside.
“There doesn’t seem to be anything wrong here,” she murmured in perplexity.
Just at that moment there came another, moan, louder than before. Kitty clutched her chum nervously by the arm and would have retreated from the room had not Doris held her back.
“It’s coming from that bedroom,” she whispered, indicating a closed door.
“Let’s go back,” Kitty begged.
“No, I intend to find out what that noise is.”
“But some one may come up the stairs.”
They listened, but heard nothing behind them.
“Do you think it could be an animal?” questioned Kitty, wide-eyed with fear, as another moan came from the room beyond.
“Hush!” warned Doris.