“I’ve great news for you, Mrs. Hilliard!” she cried, carefully closing the door behind her. “I’ve caught two of the thieves, and you’ll never guess who they are!”

“No, I won’t even try,” returned the other. “I’m not much good as a detective. But hurry up and tell me.”

“Pauline Brooks and Mary Green!”

“Pauline Brooks!” repeated Mrs. Hilliard in amazement. “But tell me how you know!”

“The detective at the Bellevue and I caught them in men’s clothing, trying to rob another guest at the hotel. Remember—I thought it was a man who stole my watch, though he did seem awfully small? Well, it was Pauline, and she was dressed up the same way last night!”

“You’re the cleverest girl I ever met, Mary Louise! How did you ever come to suspect those girls?”

“I’ll tell you the whole story later—when I have more time, Mrs. Hilliard. I’ve got to be off now, after some evidence to prove that they were the thieves who did the stealing here. You see, they’re in jail now for what they did at the Bellevue, but I have nothing to prove they were guilty of the robberies at Stoddard House.”

“But what are you going to do?”

“I’m going to try to find the leader of their gang and find the treasure chest. And that reminds me, I want the names of those two transients who were here when you missed the vase and the silverware.”

Mrs. Hilliard searched for them in her book, and Mary Louise copied them, although she had little hope that they would help her. The way these girls changed names with each change of residence made it extremely baffling.