“Lady, again,” Dr. Stone urged. “Search. Fetch.”

For what? Joe racked his brain and tried to find an answer. Once he heard the soft sniff of the dog, but could not see it. Suddenly it was beside his uncle again, motionless as before. How long it had been there he did not know.

“We’ll go to the house now,” Dr. Stone said.

They crossed to the porch and rang the bell. The living room was all at once alight, and Harley Kent opened the door.

“I thought you might be along, Doctor. Come in; come in. It looks as though we’ve cleared this thing up.”

“Then the necklace was recovered?” Dr. Stone asked.

“No—not exactly. They’ll sweat Donovan and make him come through. They took him away this afternoon.”

“So I heard,” the doctor said without emotion. “Under arrest?”

“Technically, no. They took him down for questioning, but—you know how those things are worked. Keep after him until he opens up and then book him. The maid slipped.”

“The maid?”