Well did they know their Aunt Gertrude. She was a maiden lady of middle-age who spent the greater part of her life in a sort of grand circuit series of visits to all her relatives, far and near. Aunt Gertrude had no fixed place of abode. Accompanied by numerous trunks, satchels and a lazy yellow cat by the name of Lavinia, she was apt to drop in at any time in the course of a year, brusquely announcing her intention of remaining for an indefinite stay. Then she would install herself in the guest room and proceed to manage the household until the hour of her departure.

Aunt Gertrude was formidable. Her word was law. And, because she was possessed of a small fortune and a sharp tongue, none dared offend her. Relatives had discovered that the best plan was to suffer her visits in silence and pray for her speedy departure.

Now she was coming to visit the Hardys.

"Aunt Gertrude is coming? Isn't that great?" exclaimed Joe.

Mrs. Hardy looked at her son suspiciously. The Hardy boys had never been known to evince much enthusiasm over Aunt Gertrude's visits before. The worthy lady had a habit of regarding them as though they were still in swaddling clothes and she invariably showed a tendency to dictate as to their food, their hours of rising and going to bed, their companions, and their choice of literature. Many a Sunday afternoon she had thrust on them a weighty volume of Pilgrim's Progress and sat guard over them as they miserably strove to pretend an interest in the allegorical adventures of Bunyan's hero.

"I didn't think you cared for Aunt Gertrude," ventured Mrs. Hardy when she saw that both Frank and Joe were beaming with satisfaction.

"When will she be here?"

"This afternoon, according to her letter. She never gives one a great deal of notice."

"She couldn't have come at a better time. For once in her life, Aunt Gertrude will be useful," Frank declared, and with that, he told his mother of their desire to organize a searching party for the missing chums.

Mrs. Hardy had been deeply concerned over Chet and Biff since their departure from Bayport and now she agreed that a search should indeed be conducted.