Mr. Superbus closed the door quickly and put his finger to his lips.
“’Ush!” he said mysteriously.
Bobbie waited.
“Well, I’m ’ushing,” he said impatiently.
Julius tiptoed to The Study and beckoned him through the doorway. He had the air of a respectable conspirator; one who knew that whenever the mine exploded he would be out of the way and could, in certain eventualities, be an acceptable witness for the prosecution.
“She sent for me,” he said darkly. “Asked me to come and stay here—I come! Could I refuse? If there’s any danger I like to be on the spot. That’s me!”
Bobbie thought he understood Diana’s motive. She wanted a man in the house; he was not alone in respecting the genius of Double Dan.
“Oh, I see. Sensible girl!”
Mr. Superbus nodded.
“Yes, sir, very sensible. I don’t know anybody sensibler. She came to the right man. Me.”