No one responded, and the detective said, curtly:

“Where do you live, Mr Pollard?”

“At the Hotel Crosby, Fortieth Street, near Fifth Avenue,” and this time Pollard gave his questioner one of his best smiles, which had the effect of embarrassing him greatly.

But with determination, he took up the telephone and called the hotel.

“Ask for the doorman,” said Pollard, helpfully.

Prescott did, and learned that Mr Pollard was out. “Had he been in?” “Yes, he had come in soon after six o’clock, and had left again, later, in a taxicab.”

Nothing more definite could be learned, and Prescott hung up the receiver, conscious only of a great desire to get down to the hotel and ask questions before Pollard could get there himself.

But first, he must look into other matters, and he turned his attention to the guests who sat round, all looking decidedly uncomfortable and some very much scared.

“Now look here, Mr Prescott,” said Pollard, with the air of one humoring a spoiled child, “you have your duty to do—we all comprehend that. But can’t you satisfy yourself regarding the innocence of most of these men and women, and let them go home? I assume there will be no dance this evening, and the troublesome circumstance of sending away the guests who are yet expected will be about all Miss Lindsay—and her brother,” he added, with a sudden remembrance of the unhelpful Louis—“can cope with. I will await your pleasure, as you seem to have picked me out for suspicion, but do get through with these others.”

Angry at this good advice, coming from the man he was questioning, and embarrassed because it was really good advice, Prescott began, a little sulkily, to take the names and addresses of many of them, and inform them they were free to leave. He detained any he thought might be useful to him, and among them he held Barry and Dean Monroe.