"It would be in keeping with Mrs. Masterbrook's character to send an anonymous letter," Mr. Nichols agreed quickly.
"I am just sure this is her handwriting," Penny insisted. "I'd not be mistaken for she has made out so many grocery lists."
Mr. Nichols took the letter and put it in his pocket.
"Then Mrs. Masterbrook is the one person who should be able to clear up this tangle," he said. "We'll go to the cottage and question her."
Thanking Mrs. Havers for the aid she had offered, the party left Ferndale and made a swift trip back to Kendon. Unaware that she was under suspicion, Mrs. Masterbrook had retired when Mr. Nichols and the young people arrived. The detective pounded on her door.
"What is it?" called the housekeeper.
"Please come out here a minute," requested Mr. Nichols.
"I am ready for bed. Can't you tell me what you want from there."
"No, I cannot, Mrs. Masterbrook. Come out unless you prefer to tell your story to a policeman."
"A policeman!" echoed the housekeeper with a little shriek. "Oh, my goodness! I'll come right out."
She was dressed in five minutes but did not take time to remove the curlers from her hair.
"Just what is it that you wish?" she asked tartly as she gazed from one person to another. Everyone was watching her soberly.
"Look at this letter," said Mr. Nichols, placing the anonymous communication in her lap.
A flush spread over the housekeeper's face but she threw back her head defiantly.
"Well, what about it?"
"We know that you wrote the letter," said the detective sternly, "so you may as well admit the truth."
Mrs. Masterbrook hesitated, and for a moment Penny thought that she meant to deny the charge. Then the woman said coldly:
"Well, what if I did write it? You can't send me to jail for trying to do a good turn."
"No one has any intention of causing you trouble—providing you tell us everything," replied Mr. Nichols significantly.
"What do you wish to know?"
"First, how did you learn Mr. Crocker's secret?"
"I worked for him a great many years," returned the housekeeper with a slight toss of her head. "Both at this cottage and later when he lived at his present home. Not being stupid, I suspected a fly in the ointment so to speak when he came into his fortune."
"You did a little investigation work?" prompted the detective.
"Exactly. I read the letters in the attic, and I thought it was time someone knew about the great injustice which had been done Walter Crocker."
"That was very kind of you, I'm sure," said the detective dryly. "What did you do when you found the letters?"
"I didn't do anything at first. Then Mr. Crocker discharged me——"
"I see," interrupted Mr. Nichols. "His high-handed ways made you remember the letters in the cottage attic. Thinking that the nephew should learn of them you no doubt entered the cottage and secured the evidence."
"I did," the housekeeper nodded grimly.
"But how did you know where to find Walter Crocker?"
"I suspected that he was a certain boy named Michael Gladwin," Mrs. Masterbrook answered. "From various bits of evidence which came my way while I worked for Herman, I gathered that Jenny's child had been placed in the Glenhaven Orphan's Home under that name."
"I must say you have shown a distinct talent for detective work," Mr. Nichols told her dryly. "You sent the anonymous letter to Michael at that address. Then what happened?"
"Nothing. There was no reply. That's all I know of the matter."
"Mrs. Masterbrook, I think you can tell us a great deal more," said Penny quietly. "For instance when did you first meet the man who calls himself Walter Crocker."
"I don't know what you're talking about," stammered the housekeeper.
"Either you explain everything or we'll take you to the police station," interposed Mr. Nichols.
"All right, I'll tell you exactly what happened," Mrs. Masterbrook agreed after a long moment of thought. "The man is a lawyer—his name is Jay Kline."
"Mr. Madden's missing partner!" exclaimed the detective.
"I don't know anything about him being missing," said the housekeeper crossly. "But he's made me plenty of trouble. I wish I had never set eyes on him."
"Tell us how you came to meet Jay Kline," the detective ordered.
"It was this way. I waited months to hear from the letter which I sent to the Glenhaven Home. When none came I decided that Michael Gladwin must be dead. I saw no reason in that case why I shouldn't profit a little myself. After all, I worked like a slave for Old Herman and he never paid me a living wage! I took the letters to a city law firm."
"So Mr. Madden is mixed up in this affair too?" asked the detective.
"I don't know anything about him," replied the housekeeper. "I met only Jay Kline. He told me to leave everything to him and that he would force Old Herman to pay me a good sum to get the letters back again."
"There is an ugly name for that sort of thing," said Mr. Nichols. "Blackmail."
"I only meant to make Herman pay me a hundred dollars."
"The principle was exactly the same. I judge that Jay Kline being an unscrupulous rascal took matters out of your hands."
"Yes, the next thing I knew he came here and pawned himself off as Walter Crocker. I tried to make him go away but he wouldn't. I didn't mean to do wrong, Mr. Nichols. You'll not send me to jail, will you?"
"That remains to be seen," replied the detective tersely. "For the time being you are to remain here in the cottage. Talk with no one."
"Yes, sir," murmured the housekeeper meekly.
The detective did not bother to tell the woman that Michael Gladwin and Michael Haymond were the same individual for he felt that the less she knew the easier it would be to carry out a plan which was forming in his mind.
Penny had supposed that her father would go directly to Herman Crocker, confronting him with the evidence. Instead, Mr. Nichols bided his time. He held several conferences with the Kendon police force.
During his frequent absences from the cottage, Penny, Susan and Michael were left to keep watch of Mrs. Masterbrook. The housekeeper was never allowed to talk with anyone by telephone or to greet persons who chanced to come to the door. While she had given her promise not to disclose anything, Mr. Nichols preferred to take no chance.
"This is the set-up," he told Penny as they held secret session. "I have arranged so that Jay Kline mysteriously recovered his package of letters——"
"But Dad——"
"It is the only way to trap him, Penny. With the letters in his possession, he'll meet Herman Crocker tonight by the footbridge. When Crocker pays over the hush money, police will arrest them both."
"I'd love to see the big roundup," said Penny eagerly.
"You shall," Mr. Nichols promised. "You've earned the right."
That night long before the appointed hour, Penny, her father and several plain-clothes men were waiting in the bushes for the arrival of Kline and Herman Crocker.
Jay Kline was the first to reach the footbridge. He appeared to be very nervous and smoked one cigarette after another. Now and then he would light a match and glance at his watch.
After a fifteen minute wait Herman Crocker's car was heard coming down the road. The automobile stopped some distance from the bridge, and Penny, who had keen eyes, saw that the old man had brought his grandson with him. However, he left the boy in the car and came toward the bridge alone.
"Well, did you bring the money?" asked Jay Kline.
"I could raise only half the sum you demanded," the old man whined. "You have the letters with you?"
Jay Kline produced the packet.
"Oh, no you don't," he laughed as Herman tried to take the letters from him. "You'll get them only when you've paid over all the money."
"I'll give you what I have. Don't be too hard on me."
At a nod from Mr. Nichols, the plain-clothes men stepped from the bushes surrounding the pair.
"Tricked!" shouted Jay Kline.
Believing that Old Herman had betrayed him to the police, he struck savagely at the man and then brushing past one of the officers, ran down the ravine. Two policemen took after him and soon dragged him back. Herman Crocker had not attempted to escape.
"Take Kline down to Kendon," Mr. Nichols ordered tersely. "I'll look after Crocker myself."
"You've nothing on me," the old man muttered. "I was being blackmailed, that's all."
"It's no use trying to put up a front," the detective told him. "We know everything. This man was a blackmailer right enough, but the real Walter Crocker has a just claim to a large portion of your estate. A more serious matter is that you are wanted for the robbery of the Kirmenbach residence."
"I'm wanted for what?" gasped the old man.
"You are under suspicion for stealing a diamond necklace."
Until this moment Herman Crocker had been calm and quiet, but suddenly he flew into a violent rage, denying any part in the robbery.
"It's nothing but a frame-up!" he shouted.
"Maybe I did keep money that wasn't mine, but I never broke into anyone's house in all my life!"
"Did you or did you not have a toy lantern in your house?" asked Mr. Nichols.
"A toy lantern?" the old man repeated. "Perry had one I guess. He lost it and found it again."
"It happens that Perry's toy lantern was discovered at the scene of the robbery. Perhaps you can explain that."
"I don't know anything about it," said Old Herman dully. "That's the truth."
"We'll see what Perry has to say about it," returned Mr. Nichols. "Come along."
He led the old man back to the automobile where the boy was waiting.
"Perry," said the detective kindly, "do you remember a toy lantern which Mr. Turner gave you the other day?"
"He didn't give it to me," the lad corrected. "It was mine."
"You had lost it?" Mr. Nichols prompted. "Do you recall how long ago you missed the lantern?"
"It was the night Walter Crocker came to see my grandfather," Perry answered instantly. "I was playing with it then and I think maybe I dropped it into his pocket."
"You put the toy lantern into Walter Crocker's coat pocket?" the detective asked in amazement. "Why did you do that?"
"I don't know," answered Perry with a shrug. "I guess I thought he might sit down on it and the glass would go bang! That would have been funny."
"I take it that Walter didn't discover the lantern in his pocket?"
"No, he went off in a hurry and I couldn't even get my toy back."
"This puts an entirely different light on the matter," said Mr. Nichols, speaking slowly. "If Perry is telling the truth, then probably Jay Kline went off without suspecting that the lantern was in his coat. He may have pulled the Kirmenbach job."
"And the toy lantern probably fell from his pocket while he was working at the wall safe," Penny added eagerly. "Can we prove it, Dad?"
"It may be possible to make Kline confess," the detective replied. "I'll go down to Kendon right away and question him."
With Herman Crocker in custody there was no one to look after Perry, so Penny took the lad back to her cottage. He was tucked into bed with no inkling of the unfortunate fate which had befallen his grandfather.
Penny and Susan sat up until late awaiting the return of Mr. Nichols from Kendon. He came in around midnight and the girls saw at once that he was highly elated.
"Well, Penny, you've won the reward!" he called out gaily.
"Not really!" exclaimed Penny.
"Yes, the case is closed," Mr. Nichols declared, "and Kirmenbach's reward will go to you."
"Tell us all about it," pleaded Penny eagerly.
"Jay Kline broke down and admitted everything. He committed the Kirmenbach robbery and several others as well. However, it was a shock to him when he learned that his conviction came about through Perry's toy lantern. He never dreamed it was in his coat."
"What will become of Herman Crocker?" Penny inquired.
"He has agreed to turn over the major part of his estate to the rightful heir—Michael."
"Will he be sent to prison, Dad?"
"That hasn't been determined, but I imagine he may escape a sentence. However, in any case, Perry is to be taken from him and turned over to someone who will give him better care."
"I'm glad of that," said Penny. "Did Herman offer any reason for doing what he did?"
"Only that he hoped to keep the fortune for himself. Then too, it seems he wished to pass it on to his own grandson, Perry. You remember he was the child of Herman's daughter, Ella—the only person whom the old man ever loved."
"Yet he mistreated Perry."
"In a way, yes, but he probably thought more of the boy than any other living person."
"And what is to become of Mrs. Masterbrook?" Penny questioned, lowering her voice.
"I didn't bring her name into the case at all. At heart I doubt that the woman is bad—she is merely a natural born trouble maker. As far as I'm concerned she's free to go on living in this community. I imagine she has learned her lesson."
"There's no question that Michael will get the money, Dad?"
"Not the slightest. And he'll owe all his good fortune to you, Penny. Come to think of it, I owe you quite a bit myself."
"You?" asked Penny, smiling.
"Yes, you practically solved my case for me," declared the detective. "Not to mention digging up one of your own."
"I had good fun doing it," laughed Penny. Then her face fell. "I suppose now that all the mystery is solved we'll be going back home again."
"We'll certainly pack up and leave this place," answered Mr. Nichols. "But we're not starting for home."
"Then where are we going?" asked Penny in surprise.
"I don't know," replied Mr. Nichols, smiling broadly, "but it will be to some nice quiet place where I can have a vacation."
THE END