“Bell’s coming to be a policeman and appear when it’s all over. I’m going in to Dr. Jerdan who isn’t on the register. And I don’t like it, Lomas. Bell shall stay outside. And if I don’t come out again—well, then you’ll have evidence, Lomas.”

Neither Reggie Fortune nor his chauffeur knew the way about in Millfield. They sat together and Mr. Fortune with a map of London exhorted Sam at the wheel and behind them Superintendent Bell held tight and thought of his sins.

The car came by many streets of little drab houses to a road in which the houses were large and detached, houses which had been rural villas when Victoria was queen. “Now go easy,” Reggie Fortune said. “Chatham Park Road, Bell. Quiet and respectable as the silent tomb. My God, look at that! Stop, Sam.”

What startled him was a hospital nurse on a doorstep.

“Who is she, sir?” Bell asked.

“She’s Demetrius Jacob’s friend and George Coppett’s friend—and now she’s Dr. Jerdan’s friend and in nurse’s rig. Keep the car back here. Don’t frighten them.”

He jumped out and hurried on to the Ferns. “I don’t like it, young fellow, and that’s a fact,” said Bell, and Sam nodded.

The woman had been let in. Mr. Fortune stood a moment surveying the house which was as closely curtained as all the rest and like them stood back with a curving drive to the door. He rang the bell, had no answer, rang again, knocked and knocked more loudly. It sounded thunderous in the heavy quiet of the Chatham Park Road.

At last the door was opened by a man, a lanky powerful fellow who scowled at Mr. Fortune and said, “We ain’t deaf.”

“I have been kept waiting,” said Reggie. “Dr. Jerdan, please.”