“I wish I could be sure of that,” Penny sighed.

With all her heart she longed for another adventure as exciting as the one she had experienced. Although she had no way of knowing what the future held, she was destined soon to have her wish gratified. In the third volume of the Penny Nichols’ series, entitled, “The Secret of the Black Imp,” she encounters a mystery more baffling than any she has previously solved.

After Mrs. Leeds and her daughter left the house, the others took Mr. Nichols for a tour of the secret passageway. Jacob Winters explained in detail how the panel operated and entertained them by playing several selections on the pipe organ.

“I love music,” Rosanna remarked wistfully. “I’ve never even had an opportunity to learn to play the piano.”

“You’ll have it now,” he assured her.

Mr. Nichols remained during the day but late in the afternoon he was forced to start for home as his work had been neglected. He was very willing, however, that Penny should remain as long as she wished at the old mansion.

The days were all too short for the two girls who enjoyed rambling through the woods, rowing and swimming in the lake, and exploring every nook and cranny of the interesting old house. But at length the time came when Penny too was obliged to depart.

“Come back and see us often, won’t you?” Rosanna urged as they parted.

“Whenever I can,” Penny promised. “I’ve had a glorious time.”

She drove away, but at the bend in the road halted the car to glance back. The house, cloaked in the shadows of evening, looked nearly as mysterious as upon the occasion of her first visit. However, to her it would never again have a fearful aspect.