“No one can enter this garage except under your observation?” Carpentaria asked him.
“No one,” said the doorkeeper, positively.
“But you don’t keep such a careful eye on the people who go out?”
“Naturally not, sir. They can’t go out till they’ve been in, and if they’ve been in they’re all right.”
“Just so. Now try to remember. Soon after this car returned to the garage to-night, did any one leave the garage who was unfamiliar to you?”
“I don’t remember, sir. You see, sir——”
“Exactly. I see. I am not blaming you. Your theory, though defective, is a natural one. Now, do you remember, for instance, a man in a blue suit, with grey hair, going out?”
“Upon my soul, I believe I do, sir.”
“You are certain?”
“Oh, no, sir. I’m not certain. But I have a sort of a hazy idea——”