She broke off suddenly as her fingers touched a tiny round object which was hidden under the wall paper.
“I believe I’ve found it!” she exclaimed gleefully pressing the button.
The girls heard a faint click. But the panel did not open.
“The stubborn thing!” Penny cried impatiently. “Why doesn’t it open?”
She pushed with both hands against the section of wall where she felt convinced the panel was located. To her own surprise and the horror of her companion, it suddenly gave way.
Penny plunged headlong through the opening. And before Rosanna could recover from the shock of seeing her friend disappear, the panel fell back into place.
“Penny, Penny,” she cried anxiously, pounding upon the wall. “Are you hurt?”
For several minutes there was no answer. Then Rosanna heard a smothered little giggle.
“All my bones are still together I guess. But I seem to have tumbled down a flight of stairs. Come on in.”
“I don’t know how to get in. The panel slammed shut when you fell through.”