“And there you are,” said Gonsalez complacently. “I’ve done a very good day’s work. Oberzohn has gone back to his rabbit-hutch to think up new revolutions—Miss Mirabelle Leicester is to be found at 307, Chester Square. Now the point is, what do we do to save the valuable life of Mr. Sam Barberton?”

Manfred looked grave.

“I hardly like the thought of the girl spending the night in Newton’s house,” he said.

“Why allow her to remain there?” asked Poiccart in his heavy way.

“Exactly!” Leon nodded.

George Manfred looked at his watch.

“Obviously the first person to see is friend Barberton,” he said. “If we can prevail on him to spend the evening with us, the rest is a simple matter——”

The telephone bell rang shrilly and Leon Gonsalez monopolized the instrument.

“Gloucester? Yes.” He covered the receiver with his hand. “I took the liberty of asking Miss Alma Goddard to ring me up . . . her address I discovered very early in the day: Heavytree Farm, Daynham, near Gloucester . . . yes, yes, it is Mr. Johnson speaking. I wanted to ask you if you would take a message to Miss Leicester . . . oh, she isn’t at home?” Leon listened attentively, and, after a few minutes: “Thank you very much. She is staying at Doughty Court? She wired you . . . oh, nothing very important. I—er—am her old science master and I saw an advertisement . . . oh, she has seen it, has she?”

He hung up the receiver.