Opening the desk, the man tried the drawer where the inheritance funds had been hidden. Failing to unlock it with a key, he took a tool from his pocket and in a moment had broken the lock.

Removing the stack of fake bills which Penny had subst.i.tuted, he thrust them into his coat. Taking no interest in anything else in the room, he moved stealthily toward the window.

Penny knew there was no one within calling distance and that the man probably was armed. Wisdom dictated that she remain in hiding, but she was determined the thief should not escape. Hoping to take him by surprise, she stalked forward.

A board creaked. With a muttered exclamation the man whirled around. At the same instant Penny flung herself upon him, diving low in imitation of a football tackle.

The thief reeled, but instead of falling he recovered his balance and gave Penny a tremendous shove which sent her sprawling backwards. Before she could regain her feet, he ran to the window. Swinging himself over the ledge, he vanished from view.

By the time Penny reached the window there was no sign of the intruder.

He had disappeared as if into thin air. However, she knew that the man must have descended by means of a ladder which he had hastily removed.

She ran her hand over the window ledge. The iron hooks no longer were there, only the scars which had been cut in the wood.

"This undoubtedly was the same fellow who broke into the Kohl apartment!"

she thought. "But how did he escape so quickly?"

Penny started for a telephone, intending to notify the police. However, when it occurred to her that her father might not wish the matter made public, she changed her mind and ran downstairs.

Unlocking the rear door, she glanced carefully about the yard. There was no one in sight, no movement behind any of the shrubbery.

"He's gone, of course," she thought.

Penny wore no shoes. Finding a pair of old galoshes on the porch, she protected her feet with them, and hobbled into the yard.

The gra.s.s beneath Mrs. Weems' window had been trampled, but at first glance there was no clue to indicate how the burglar had gained entrance to the house.

"Obviously he used a ladder," she reasoned. "But how did he descend so quickly? And what became of the ladder? I know he never had time to carry away one of the ordinary type."

A dark object lying on the gra.s.s attracted Penny's attention. Picking it up, she carried it to the porch and switched on a light that she might see to better advantage. In her hand she held a torn strand of black silk rope.

"This may be an important clue!" she thought excitedly. "I know now how the man entered the house!"

As Penny examined the piece of rope, automobile headlight beams cut a path across the yard. The Parker car drew up on the driveway and both Mrs. Weems and Mr. Parker alighted.

"Dad, come here quickly!" Penny called as he started to open the garage doors.

"What's wrong, Penny?"

Both the publisher and Mrs. Weems came toward the porch.

"We've had a burglar," Penny announced. "He broke into Mrs. Weems' room, smashing the lock on the desk--"

"My money!" the housekeeper exclaimed in horror. "Oh, Penny, don't tell me that it's gone!"

"He escaped with the contents of the drawer."

Mrs. Weems gave a moan of anguish. "Haven't you called the police?" she demanded. "When did it happen? Tell me everything!"

"First, I'll set your mind at rest," Penny replied. "Your money is safe."

"Oh! I never was so relieved in all my born days." Mrs. Weems sagged weakly into a porch rocker. "Penny, how could you torture me by letting me think the money was stolen?"

"Because I have a confession to make, Mrs. Weems. You left the key to your desk lying on the bathroom floor. I thought it might be a good joke to move the money to another place."

"Oh, you darling blessed girl!" laughed Mrs. Weems. "Where did you hide it, Penny? Are you sure it's safe?"

"It should be. I had it taken to the First National Bank and deposited in your name. The thief carried off a package of fake money."

"Rather high-handed weren't you?" commented her father.

"Now don't you scold her," spoke Mrs. Weems quickly. "I am glad Penny acted as she did. Otherwise, I might have lost my entire inheritance."

Penny drew a deep breath. "I'm relieved you feel that way about it. I wish I could see the burglar's face when he discovers he stole worthless money!"

Both the housekeeper and Mr. Parker pressed her with questions. She revealed exactly what had occurred during their absence, showing them the strand of black silk rope.

"Dad, I think this may be a valuable clue," she declared. "What does it suggest to you?"

"Not much of anything, I am afraid."

"You remember that when the Kohls were robbed the police couldn't figure out how the burglar gained entrance?"

"Yes, I recall the story."

"Well, I believe the same man committed both burglaries."

"Why do you think so, Penny?"

"At the Kohl's the police found two marks on the window ledge apparently made by iron hooks. Similar marks are on the sill in Mrs. Weems' room.

For that matter, I distinctly saw the iron pieces bite into the wood."

"Let's look at them," proposed Mr. Parker.

"Only the marks are there now, Dad. The man jerked the hooks loose after he descended. They must have been attached to his ladder."

"I thought you said he had none, Penny."

"There was no time for him to have carried away an ordinary, heavy ladder. I think the one he used must have been made of silk."

"And this is a piece of it!" Mr. Parker exclaimed, examining the twisted strand with new interest. "Your theory sounds plausible. It would be possible for a man to scale a wall with such a ladder."

"He could jerk loose the hooks in an instant, too, Dad. The ladder would fit into a small suitcase, or even his pocket!"

"There's one objection to your theory, Penny. How could such a ladder be raised to the window ledge? It naturally would be limp."

"That part has me puzzled, I'll admit."

"I never even heard of a silken ladder," said Mrs. Weems doubtfully.