"There's four of them," said Tracey; "two women and two men."

Derrick shook his head. The case was too mysterious for him to venture an opinion.

CHAPTER III

[THE BALDWINS]

"Maryanneliza, do keep the children quiet. The bad twins are fighting with the good twins, and the odd ones are making such a noise that I can't finish this story."

"Well, ma'am, there's so much to be done. The breakfast's to clear away, and the washing to be counted, and----"

"Oh, don't trouble me," cried Mrs. Baldwin, settling herself on the sofa. "It's one of my bad days. What Miss Mason will think of the way this house is kept, I don't know. What do I pay you wages for?"

"It's little enough I get," said Mary Ann Eliza, firing up.

"More than you're worth," retorted her mistress. "If you were a mother, with seven orphans to keep, you might talk. Where's Miss Gerty?"

"Gone to see Mr. Tracey at the factory."