Mary Louise laughed out loud.

“So I’m on the track of the wrong mystery,” she thought. “Oh, well, if I could find Margaret Detweiler I’d be happier than if I got back all that money stolen from Stoddard House. So my day really hasn’t been wasted.”

When she arrived at her hotel she literally smelled Christmas in the air. The windows were hung with wreaths; holly and mistletoe and evergreen decorated the rooms on the first floor. Everybody seemed to be hurrying around with a pleasant holiday air of excitement, carrying packages and making last-minute plans for the great day.

A sudden swift feeling of homesickness took possession of Mary Louise, a violent desire to be back in her own home in Riverside, sharing the happy holiday confusion. For a moment she felt that she would have to go back at any sacrifice. But ambition overcame sentiment. She would not be a quitter, and leave at the most important time. She would see the thing through as she had planned.

But there was nothing to prevent her wiring to her father to come and spend part of the holiday with her. Especially now that she had something definite to report to him. So she composed a telegram and sent it at once, over the telephone.

“Have caught thieves,” she said, “but cannot recover stolen goods. Leader of band at large. Please come help me. Love—M.L.”

As soon as the message was sent, she felt better and was as jolly as anyone else at supper. She was helping the Walder girls tie up packages and humming Christmas carols when a call came for her on the telephone.

“Maybe it’s Dad,” she said to Mrs. Hilliard as she came into the manager’s office.

But it wasn’t. It was Mr. Hayden, calling from the Bellevue.

“Pauline Brooks has wired to a Mrs. Ferguson, Hotel Phillips, Baltimore, Maryland,” he announced, “asking for five hundred dollars. All she says in her telegram is: ‘Please send $500 bail,’ and signed it ‘P.B.’ But I thought it might help you to know to whom she wired, Miss Gay.”