The woman hesitated for a moment; then, with a quick gesture, she pointed to the old writing desk.

“Gage was a shrewd one,” observed the lieutenant. “With a safe in the room, nobody would think of looking for valuables in a broken-down desk. Now,” drawing a little closer to the woman and trying to catch her shifty eyes, “I wish you would tell us who killed him. I think you know.”

A tremor passed over the woman’s ashen face, and she fixed Pinto with a look that caused the lieutenant to lift his brows in perplexity. Finally, she pointed a finger at the patrolman.

“You heard what he said, didn’t you? Mr. Gage told him the Gray Phantom did it. Isn’t that enough?”

Culligore regarded her narrowly, as if sensing an attempt at evasion in what she had just said. Then he nodded and seemed to be searching his memory.

“Let me see—Gage and the Phantom had some kind of row a few years back?”

The housekeeper’s “Yes” was scarcely audible.

“What was it about?”

Her lips curled in scorn. “That’s what I could never understand. They were quarreling like two overgrown boys over a piece of green rock. Imitation jade was what Mr. Gage called it. I never got the story straight, but it seems the Phantom had been carrying it around as a kind of keepsake for years. He lost it finally, and somehow it got into Mr. Gage’s hands. The Phantom wanted it back, but Mr. Gage was just stubborn enough to hang on to it. They had an awful rumpus, and I think the Phantom threatened to get Mr. Gage some day.”

“All that fuss about a piece of phony jade? The Phantom must have had some particular reason for wanting it back. What was it shaped like?”