"Mrs. Gallup, have you seen a little green paper-covered book anywhere in the house?" she inquired anxiously.
"I saw it in your room this morning," the housekeeper informed. "I think it was on the dresser."
"Oh, yes, I remember now, that was where I left it!" Penny laughed in relief.
She raced up the stairs two at a time, forgetting that she had ever been tired. To her delight the little book was lying just where she had dropped it.
She caught it up, rereading the notations which she had made the previous day. Hearing her father's car on the driveway, she slipped the notebook into her pocket and turned to leave. As she crossed to the door, her eye chanced to rove toward the desk. She stared in blank amazement.
The Black Imp was gone.
CHAPTER XVII
"Private—Keep Out"
Penny's cry of alarm brought Mrs. Gallup hurrying up the stairs.