Mrs. Jeffries Dusts for Clues (Mrs. Jeffries, 2)

A servant girl and a priceless brooch vanish at the same time, and it doesn't take a genius to put two and two together. The Inspector finds the brooch on a dead woman-but where's the missing servant? Fortunately, Mrs. Jeffries isn't one to give up on a case just because of a few loose ends . . .